Do you know anyone who is taking gambling as a profession and yet making an household income for living ? I don't think anyone can make consistent income with gambling.
Gambling may give you a lot of money at once or you may lose all your money but getting regular income from gambling is impossible.
Those gamblers that have already a good status can do this. Those fairy tale stories of rags to riches through gambling are very rare but there are stories like that which are unbelievable.
I reckon that getting a daily profit through gambling is hard, it's not that impossible but it is inconsistent if someone does that. It can be a good day today and tomorrow up to a week but the next time, you know what's coming.