The article asserts that, since this is a one-time tax, billionaires will have no incentive to leave: "The tax’s designers, however, think they’ve come up with a clever solution to capital flight: a one-off tax that is retroactive, based on a billionaire’s residency status on January 1, 2026. In other words, unless they’ve already fled the state, billionaires won’t be able to move to avoid paying the tax. 'At this point, there’s no financial incentive to leave California,' Zucman said. 'You’re going to pay the same amount either way.'"

That misses the point. A one-time wealth tax to plug holes in the state's finances reeks of short-termism and desperation, like Chicago selling off its parking meters. Even if I wasn't affected by the tax, I'd be alarmed at the implication. It would have been much better to implement a well thought out and orderly recurring tax on capital gains or whatever.