[hephaes7us]

I'm not certain what you're advocating for here?

If you are interested in the public good, I think it is pretty clear that we should ban roulette overnight since it has a negative expected value for everyone but the casino. On the other hand (still presuming you're interested in the public good), I think you have to consider very carefully whether it's good or bad to lock people out of investments or to restrict people's access to health care.