taxes aren't handed to a person (the president) but to the state. The tariff (how much you must pay) and what the state does with it, is democratically and lawfully determined by the the congress (or whatever the legislative body is called).
If you think you pay too much or they are doing the wrong things with it, you can try to change or influence that by voting for other representatives or convincing the current ones that they made a bad decision.
I doubt if many of the riches would prefer a dictatorship. One notable exception: the French actor Gerard Depardieu who moved to Russia because he found the taxes in France too high.
and you had a president who called you "greedy" and generally showed disrespect for you because of your wealth, how would you feel? If that president decided that you should hand the majority of your income over to him so he could give no cost education, healthcare and welfare benefits to anyone he chooses, would you continue to generate spending money for that person?
To me, such a plan makes no sense in the longer run. What you'd be doing is stealing the eggs from the golden geese who currently exist but not producing any more of them. If you want to get addicted to the productivity of such geese, you need to generate more golden geese that are stupid enough to keep replacing the eggs you're stealing from them.