Hopefully sooner? I think, hopefully never. As soon as you take the money away from the geniuses, the insanely industrious businessmen, and allow the lame bureaucrats and politicians to decide where it goes, then you destroy a generation: No more will angsty, thirsty, motivated young bloods work 20 hour days for a decade to build a business.
"And what happened next, Grandpa? Did such oppressive tax rates stem economic growth?"
"My boy, not at all! What followed was one of the most prosperous times in the country!"
I'm not saying correlation, causation, blah, blah, blah. But such rates not only didn't "destroy a generation", it's a time many look back to fondly (in which case they're probably white and male).
Fair enough, I think given the replies I've received that I need to learn more about tax rates and growth; since I've already started the conversation with you do you have any suggestions on how I should understand this topic better?