trading and gambling are two very different things even though both have a risk of loss, for me gambling relies on luck, but in trading it really requires proper knowledge and analysis in trading, in gambling if we are not lucky then we will obviously suffer losses and if in trading experiencing a decrease in price so we can still wait when the price is good.
Over here you are referring to EV- gambling games which are more commonly known to public and those are relying on luck, no doubt. But we also have EV+ games like poker, sportsbetting which require the gambler to have certain skills and practice them to maximize their winnings.
Then in trading we have spot trading which is the buy/sell thing that everyone is aware of and we also have Futures, Leverage and all which are less known to public. Spot trading can be likened with EV+ gambling while the others with EV- gambling.
The point to note there is that exchanges will never market spot trading because its implied that it is going to be there. You have to decide whether you want to play with luck and reach huge profits/losses in short time or want to play it cool and get significant profits over time.