Claiming residence in SF or NYC during the hiring process, then starting working somewhere else...
The best way about this is for FB to split the difference. Eg. if your average tc is 300k in SF, and it is 200k in North Carolina, if you decide to move there, you will be slotted down to something in between so it becomes a win win.
It would be a bit of a cat and mouse game. Companies can trace where you are working from VPN logins. I suppose you could VPN through San Francisco then VPN into your corporation’s network, but they probably monitor for use of common VPN providers. Plus during your meetings, etc, you coworkers would notice if you moved.
The land market cost moves on this could be huge if many companies do this. IMHO it could be bigger than any effect UBI might have had, as typically UBI would see lower earners flee high cost to new "marginal" areas with their UBI income. In this case it's mid to high earners who are suddenly able to flee the nest, which I feel could have a larger impact on land costs. Very interesting times.