Here's a better question: do we need them? I'll answer it for you: no. Let them leave. We still have the resources and the productivity. The fact that some asshat that doesn't do fuck all doesn't get to scrape profits for himself is just another advantage, aside from just not having these annoying billionaires around. People need to open their minds to the idea of us just taking their shit for ourselves.
I believe the level will simply be adjusted then, the middle class end up being heavier taxed.
But that is usually a fairly large group, and if they feel taxes are too much, they will listen to any politician that promises a solution.
Then it can become pretty nasty...