I wouldn't be surprised if it's not largely driven by personal profit motive/asset exposure of the decision maker class ... executives, boards, and upper management at such companies are nearly uniformly composed of wealthy individuals who probably have diversified investment portfolios including tons of commercial and residential real-estate interest in places like the Bay area ... what happens to real estate prices in the bay if tech becomes remote? Personally I can't imagine choosing to live in San Francisco in the first place -- but how many of the folks who did for work, then left during the pandemic to live in more livable places, would really want to go back if given the option not to ...?