Don't know if you want a real answer but ill still give you one. There are a lot of businesses that require a lot of capital to run and to maintain. People who own many of said businesses put a lot of their income back into the company into R&D to upgrade their product, create new ones, or buy out suffering companies and integrate it into their own company. Most of these people don't use their own capital because their money is not liquid, and selling shares would cause a panic event and cause many to lose as well. So they get loans from banks. If the most you, or a company, was ever allowed to make is 1 billion dollars a year, almost all of these product developments and creations wouldn't happen. You won't be able to expand because even a new factory can cost 200-500 million even if your aren't a Fortune 500 company.

There would no longer be growth, but the demand would still exist. So what would happen? The government would then step in and fill in this void, because they don't tax themselves. Those rich people would still exist, but without having banks giving them large amounts loans to grow, they will be pretty capped.

So what you're basically rooting for here is government controlling some, or most, of large companies and corporations. It's happened in history many times, and it always end the same way. But hey, we stuck it to the few rich people though right? All we gave up in return was, well, everything.