However, we have an excellent resource to help you earn millions of $GTA from the stock market regardless. If players had access to unlimited cash, it would make this feature meaningless. Each player affects the market and all other players will see stock prices rise and fall accordingly. The simulated stock market in GTA 5 is connected across all instances of the game in order to make it feel a little bit more like a real stock market. The reasoning behind there being no money cheat in GTA 5 story mode is simple.