This is not really an accurate representation of FAANG hiring and job searching. In reality, there is a very very high amount of job hopping and also connections to people at other FAANGs (and there's also levels.fyi and blind) so we're well aware of comp structures, what employment agreements, levels, etc are across companies and how to compare then. There's very little information asymmetry in fact people go into negotiations with recruiters very well equipped, far better than at small companies.

> BTW, has anyone got a leaked (anonymized) copy of FAANG employment contracts so one can compare the various clauses across employers, and track changes of their standard templates over time

If this doesn't exist it's only because it's incredibly uninteresting. levels.fyi will tell you all you need to know. (also they aren't employment contracts, in the US we do agreements because we're at-will)

I've hopped multiple FAANG+s now across my career.