[UncleMeat]

What if the pot is very large.

I am paid very well. But my employer makes so much in profit that any loss to other engineers would be vastly outweighed by the amount won from the bosses.

Unions are not just about job security. They can fight for compensation and benefits. And job security is not some meaningless thing, even for competent workers. Getting laid off still sucks even if you can find another job. If you are here on a work visa that's going to be stressful as all hell even if you are a massively in-demand engineer. We can also see what happens when there are coordinated layoffs by the bosses. It is definitely not the case that all competent engineers are having fast turnarounds to get another job right now.