It is quite possible that Musk has given California more in taxes than everyone commenting on HN today, combined. A quick search suggests [0] he has order-of-magnitude billions in Californian tax liabilities.

If he doesn't think there is value for money, it is appropriate that he moves. He doesn't have a moral responsibility to prop up California if he doesn't think they are spending his money effectively.

[0] https://www.mercurynews.com/2021/11/30/elon-musks-california...