[hwstar]

No one is indispensable, including and up to the CEO.

Even key employees can be replaced if properly managed.

If they are a key employee, they bide their time, plan, and locate a suitable replacement candidate. Once the replacement is up to speed, they let the replaced employee go. I've seen this happen a a lot in the companies I worked for.

[tsotha]

How is that different from you searching for another job, biding your time, and quitting when you have a suitable replacement candidate?