Good riddance. We need the space more than we need the tax revenue. (no offense intended, the housing situation is just dire and I’ll use any excuse to convince people to move out cause so few actually people want to)
The reality is that California is so economically powerful that any corporation that leaves is almost certainly going to have to register as a foreign business and pay the franchise tax on all revenue earned in California anyway (the minimum cutoff is $500k or 25% of total revenue, whichever is lowest). The employees who stay in California are still going to pay income tax which makes up the bulk of state revenues. Everyone is still going to be paying sales tax on goods purchased from California vendors, the largest source after income tax.
Corporate taxes contribute less than 15% of California's budget so it's a reverse catch 22: either they're so small that the threats to leave are empty (DO IT!), or they're so big that they can't afford not to pay California taxes regardless of where they are. Like I said, either way the FTB will get the bulk of its cut.
If you want an affordable home move somewhere affordable. You can't legislate affordable housing for yourself without introducing problems for everyone else. Someone just living in a home they bought is not actively preventing you from affording one, at least, they're the last people you should blame (even after yourself).
Housing should not be an investment, period.
California stands alone as one of the top 5 or 6 biggest economies in the world. The 2008 GFC was a blip in our housing market even when the economy turned upside down. My city experienced less than 18 months of flat real estate prices before growing out of control again.
If an actual economic crisis caused by housing loans doesn't destroy California's housing market, forcing companies to pay their fair share certainly won't.
So if I invent an awesome new car, it's selfish because it's destroying the value of your beater? If I invent a new GPU that costs 1/10 the price of existing ones, it's selfish because your computer is now worthless on the secondary market?
Homes are to LIVE in, I consider them consumables just like cars, just on the order of ~a lifetime instead of ~10 years. I don't give a flying f about neighbors' house or car values, I just care that I have a comfortable roof to live under and that I can afford it.
I know boomers treat houses as investment assets. I don't. They're shitty return and high-maintainence as an investment. But I'd like to have my own so I can modify the hell out of it to my liking.