Not saying it cannot be done, but it would lose them a ton of money. Yep, it's a double-edge sword because it puts a non-trivial amount of pressure over me. Even if they found someone with the rare combination of skills required, it would set them back years in the most optimistic scenario.
So yeah, "indispensable" people do exist. In the sense that you can lose big by parting ways with some people and not effectively replace them. Obviously life would go on, eh.
