While I certainly understand the appeal of tax arbitrage, California has at least one thing going for it. Unlike most states, it generally disallows non-compete clauses as a matter of public policy.

Tech thrives on the mobility of talent, so it's no coincidence that California is where the tech industry thrives. Almost 70 years ago, eight engineers at Shockley Semiconductor had a better idea and left to start Fairchild Semiconductor. That led to Intel, AMD, and National Semiconductor, later spawning NVIDIA, SGI, Qualcomm, and ultimately creating trillions of dollars in wealth. No other state will ever overtake California's dominance here unless it allows for that same mobility of talent. Almost every state tries to _attract_ billionaires these days, but this is one reason why most states can't _create_ them.