I always got hung up on that too. It seems to me that the ideal state would be you invest in a company, they make a profit, you get a share of that profit. You can reinvest that in other places, helping more people start their businesses, helping more people find employment and get things done. It's like economic democracy in action, where people get to decide what businesses are needed through investment. No person on Earth should have the funds to just build a chip fabrication plant, as an example, so crowd sourcing the funding like this makes perfect sense to me.

Where it falls down is in short term greed. I don't think that the system was intended or can reasonably sustain all the high-speed trading trying to maximize returns not by helping the company succeed but by leeching off of the investment of others. What should have been a way for people to help build things has become a way for a whole industry to extract more money out of the world.