https://www.sambrotman.com/blog/california-exit-tax#:~:text=The%20California%20exit%20tax%20is,%2C%20stocks%2C%20and%20other%20investments.
This tax policy will be a short term winner for California tax revenues. I liken this policy to Venezuala and other like countries which simply steal private businesses and suddenly the government is in the oil business. It's great for the country in the short term, but it puts a quick end to outside companies from doing business there.
Who in their right mind would move a lucrative company to California? What billionaire would relocate to California? California is making it painful to leave, and they are also assuring a business sector death in the future.