If you do not want everything to be owned by a tiny elite, you have to aggressively tax extremely high levels of wealth. Because otherwise, if you're Jeff Bezos, what is he worth? $300 billion, right? Even if he makes 5% a year, he's making $15 billion a year, right? And it's just going to grow, right? It's going to grow unbelievably quickly.
Do you want everything to be owned by the tiny elite or not? If you do not want everything to be owned by a tiny elite, you have to aggressively tax extremely high levels of wealth.
The argument in favor of allowing everyday investors to own this stuff is that this stuff has made people really rich over long periods of time and so if you only let rich people own it, they're only going to get richer and the wealth gap explodes.