I think if we abolished the stock market, it would come back in some form. It answers a need. I also think it's a very beautiful thing, marred by the flaws in society.
If someone kills you for your berry and your flint knife, they have them.
And since we have money, which acts as a form of Stored Labor Value, we can even do this remotely and abstractly.
Your labor doesn't produce those materials. But you have stored value to trade for them!
Now, in this example, you know Stevog and you're dealing with each other directly. This limits participation and thus opportunity to people who know the right people.
Except because we've got this Stored Labor Value, it's all way more abstract.