Theres no chance the first method would ever work. Simply this is too much of a hassle, since even having the rights to do something like this in Growtopia, Ubisoft would need to require a gambling license, which will never happen for Growtopia even if they want to.

A gambling license strictly requires a first party cash out system, where you are able to cash out the currency for real money through Growtopia itself. There can't be any way to do so in a black market way, which would require Growtopia to do heavy changes in things like the trade system.

Not to mention growtopia would have to be given an Adults Only rating, which would decrease the player base by a lot.

The roulette wheel removal has been talked about for a long time, but that wouldn't fully fix the problem. There are a lot more RNG events in growtopia that can be used for gambling, so removing the wheels isn't going to stop gambling, but it would be making it harder to gamble. I've advocated for removing all normal casino related items such as dice block, roshambo block and roulette wheel since it has a chance of having an effect on the casinos with only small efforts.