And if you make them subject to "alternative minimum tax" where their stock based compensation is considered regular income for the year it is awarded based on the difference between the strike price and the market price, you "moderate" that process somewhat.

But if you're a politician and your donors are all rich elites who really hated that aspect of AMT you get repeal it for them: https://www.bowlesrice.com/tax-cuts-and-jobs-act-2018-change...