Generally, gambling and trading could have just some similarities but they can never be the same thing and like I already said in one of my comment before, a gambler can actually handle training like gambling but it will definitely cause them to lose more than they should have won, meanwhile an expert in trading can take a series of trade without encountering any losses but a gambler who wants to handle gambling as trading can end up to lose more than they expect.
If it's really about the cashout options on gambling, it's not really the same thing with trading stop lose.
In some contexts gambling and trading may have similarities but in a much more responsible handling it may be difficult to apply both. I see many people who are unable to control their addiction in gambling but people are able to control themselves not to get involved in trading excessively. Payouts and stop losses in trading have different natures and maybe we can see how gambling sites can temporarily close withdrawals or reopen after the game is over.