You have probably tried to become irreplaceable at work. You learned the system nobody else understands, and you became the person everyone calls when it breaks. It felt like job security.
Nvidia held that exact position in China, and China just built its way around it. The thing that made Nvidia essential is the reason China replaced it.
The short version
- Being irreplaceable at work does not protect you, because heavy dependence gives your employer a reason to build a way around you.
- Your replacement only has to be good enough and available, not better than you.
- The safer position is being someone a company would still choose when it has other options.
What happened between Huawei and Nvidia
How China stopped needing the best chip
For years, Chinese AI companies ran on Nvidia chips. Nothing else came close, so nearly everyone building AI in China depended on one American supplier.
Then US export rules cut off Nvidia’s most advanced chips. China could no longer count on its supply, so it backed a homegrown option from Huawei.
In September 2026, Huawei’s chairman said its Ascend chips probably now hold a bigger share of China’s market than Nvidia’s. He offered no data, so treat that as a claim.
The demand is real, though. Huawei says it cannot make enough chips for China alone, and it is limiting sales abroad.
Why a weaker chip was enough
Huawei’s chips are not better. Each one is still weaker than Nvidia’s best, and Huawei’s own chairman admits the gap.
China did not need a better chip, only one it could count on. A supply you control beats a superior one that can vanish overnight.
Huawei makes the same pitch to its buyers. A customer who knows the chips will arrive can plan, and a customer waiting on another government’s permission cannot.
Why being irreplaceable at work makes you a target
Dependence is a risk someone has to manage
Now look at the same story from your employer’s side. If only you can run payroll, fix the server or handle the biggest client, you are a single point of failure.
Managers notice that, even the ones who like you. You could quit, get sick, or ask for a large raise, and each one becomes their problem.
The more a company depends on you, the more reason it has to stop. Sociologists described this more than sixty years ago. Power comes from being needed, and the side that needs you works to need you less.
So the company trains a backup, documents your process, buys software, or hires a junior to shadow you. None of it is personal. It is the same move China made.
What speeds up the backup plan
Notice what triggered it. China did not act while Nvidia was simply the best option. It acted when the supply looked like it could stop.
The same holds at work. The moment you seem likely to leave, burn out or hold out for more, the backup plan speeds up.
Your replacement only has to be good enough
You may think nobody can do the job as well as you. You are probably right, and it does not matter.
A company rarely swaps its best person for a better one. It accepts someone cheaper or more available who covers most of the work, then lives with the gap.
That is the trap of being irreplaceable at work. You are defending quality while they are solving for risk.
Pip’s take
The cemetery is full of irreplaceable people. Their employers posted the job listing within the week.
What staying the only one costs you
You become too useful to move
There is a second cost, and it arrives before any replacement does. When only you can do a job, moving you becomes expensive.
Promotions go to people the team can spare. The person nobody can cover for often stays exactly where they are.
Maybe you have heard the line: we cannot afford to lose you in that role. It sounds like praise, and it works like a fence.
You also cannot take a real holiday, because the work waits for you. Being irreplaceable at work looked like security, and now it feels like a cage.
Your skills only work in one place
Much of what makes you essential is local knowledge: the old system, the odd client, the workaround. That knowledge is worth a lot inside your company and very little outside it.
Star performers show the same pattern. When top Wall Street analysts switched firms, their results often dropped for years. Part of their edge lived in the old team and its systems.
The exceptions are telling. Analysts who moved with their teammates held up far better. So did those who joined firms with equally strong support.
So the harder you work to stay irreplaceable at work, the less you can carry out the door. You grow more valuable to one buyer and less valuable to every other.
What to build instead of being irreplaceable at work
Aim to be chosen, not needed
Nvidia offers the useful half of the lesson. It lost ground in China, yet it still sells most of the world’s AI chips.
Its position never rested on one customer. Being needed by one buyer is fragile, and being wanted by many is not.
For you, that means value that travels. Skills other employers recognise, a reputation beyond your team, and results you can describe in plain numbers all count.
A quick test helps. Ask whether a stranger in your field would understand what you are good at within one minute. If the answer needs your company’s internal jargon, the value is still local.
Make yourself easier to replace on purpose
This part feels backwards. Write down how your work gets done, teach someone else the fragile bits, and stop guarding the system only you understand.
You lose the illusion of protection and gain room to move. A person the team can cover for is a person the company can promote.
It also changes how people see you. Someone who shares what they know looks like a leader, and someone who hoards it looks like a bottleneck.
Then check where your own dependence sits. If one employer supplies all your income, skills and contacts, you are the one without a backup chip.
Nobody owns the state of being irreplaceable at work. The other side grants it for as long as it has no alternative, and it is always working on an alternative. Better to be the one they would pick anyway.
FAQ
Is being irreplaceable at work good for job security?
Less than it feels. When a company depends heavily on one person, that dependence is a risk it has to manage, so it trains backups, documents the work or buys tools. You are safer when other employers would also want you.
Why did China replace Nvidia chips with Huawei chips?
US export rules cut off Nvidia's most advanced chips, so Chinese companies could no longer rely on the supply. Huawei's Ascend chips are weaker one for one, but China can count on getting them. Huawei says demand in China now exceeds what it can produce.
Can being too good at your job stop you getting promoted?
Yes, if nobody else can cover your work. Moving you leaves a gap the team cannot fill, so it is easier to keep you in place. Documenting your work and training a backup makes you easier to promote.
Resources
- Pan, C., Hall, C., & Baptista, E. (2026, September 17). China’s Huawei says AI chip demand outstrips supply as it steps up Nvidia challenge. Reuters. China’s Huawei says AI chip demand outstrips supply as it steps up Nvidia challenge
- Emerson, R. M. (1962). Power-dependence relations. American Sociological Review, 27(1), 31-41. Power-Dependence Relations
- Hickson, D. J., Hinings, C. R., Lee, C. A., Schneck, R. E., & Pennings, J. M. (1971). A strategic contingencies’ theory of intraorganizational power. Administrative Science Quarterly, 16(2), 216-229. A Strategic Contingencies’ Theory of Intraorganizational Power
- Groysberg, B., Lee, L. E., & Nanda, A. (2008). Can they take it with them? The portability of star knowledge workers’ performance. Management Science, 54(7), 1213-1230. Can They Take It With Them? The Portability of Star Knowledge Workers’ Performance
- Lazear, E. P. (2009). Firm-specific human capital: A skill-weights approach. Journal of Political Economy, 117(5), 914-940. Firm‐Specific Human Capital: A Skill‐Weights Approach
- Christensen, C. M. (1997). The Innovator’s Dilemma. Harvard Business School Press.
