If they see gambling as a source of income, I think it is wrong. Gambling is made for entertainment and making fun.
So I don't think we can treat gambling as we can make profit here. Gambling is very risky to treat it like that.
That is going to be a wrong decision if you are going to keep on doing that in gambling. Because you already have the knowledge that gambling sites are business.
But what you tend to do is keep on gambling and you are not able to control yourself to stop it or moderate it. The gamblers are making gambling wrong
for being an irresponsible gambler.