I'm pretty sure a company like Google that has no problem killing unsuccessful products after multi-billion dollar investments, knows how not to fall for the sunken cost fallacy.
> execs themselves probably have serious personal real estate positions and
As opposed to move to a different state, buy a house 3x the size for the same money, and save 10% on state income tax? Hmm....
>companies have a sizable chunk of h1b-captive employees that has to stick around anyway.
The very fact companies sponsors H1b instead of having them working remotely from China or India is precisely because they believe in the value of everyone physically together.