Cost. Paying early termination on your rental contract. Paying to move. First, last, and a cleaning deposit at your new place. Stocking a new place with perishables. An easy 3+ grand to move to an inexpensive town.
Loss of salary/job opportunities. You won't have the same job opportunities, nor salary ranges, if you live in a less expensive part of the country, since your new pay will be based off your peers in your physical location, not your last salary in SF.
So they will have to downgrade from an extremely privileged position to just highly privileged position. Should we open some fundraiser so they can keep their expensive lifestyle even after layoffs?
I think 3 grand is probably an underestimate for any significant move. It cost me $1k to move ~2.5 miles across town the last time I moved.
And I've spent what, $5,000 to send a couple pieces of furniture across the country for a move because they weren't replaceable, and I had the money.