We don't need high-tax, low freedom SF. People can do work over the internet. Look at GitLab. Hundreds of employees and no physical location. Imagine making a 6 figure income but living in a place with minimal state and local income taxes. We are entering the period of fully digital corporations. The ultimate form of this is the DAO (see Bisq, Maker, Augur sort of).
I guess it's not commonly known but SF by population count is only 10% tech. The other 90% is mostly anti-tech. There's even protests against more tech moving into the city and the occassional attempt at anti-tech regulation (no bus laws, no free lunch laws, etc). i think they succeeded with the no bus laws: I know at least one startup that was shut down for providing bus service for workers.