I have a feeling that the moment R* released the stock market online that we will have a bunch of farmers offering day trader services.
i.e. You give them a bunch of money and they invest it and move your money around all day to get the max profit. At the end of the day they give you your profit back and take a percentage.
Sounds pretty fun to me if I had the time to do such. But there is also the problem of that you have to rely on a lot of trust from the day trader to give you your money back haha.