Interestingly, some employers I know encourage remote working on the grounds that they then need to maintain smaller office spaces (actually those going to offices aren't that cramped). Seems like employers save on your not-coming in person and not minding keeping your high salary.

Quite a bit different from my experience, which admittedly is at companies like Google, Facebook, etc that bus people into HQ from 7 counties, into tightly packed office space.