That would tip the balance of power to another corrupting influence. Corporations, say. Or professional associations representing highly-educated high earners like doctors or lawyers. Or to politically savvy deca-millionaires who use their money with more focused attention. And that's setting aside the question of how and whether you could prevent the existence of billionaires, which would lead to offshoring and (plausibly at least) dramatic unintended changes in what kinds of social and technological change happens. But either way, coalitions corrupting institutions is not a soluble problem generally. It gets solved with acts of effort and courage like this one, and by discussions like this.