Gambling places are not for steady income, if you want steady income with gambling, online or offline, you have to be a owner, build your own casino and watch yourself growing up into a filthy rich billionaire.
This is the only way you can make money from gambling provided that you are not a gambler and you are more of a businessman, gambling operators are gamblers themselves but they are business minded and they know the in and out of making a profit from gambling,
The fact that they know that gambling is a highly competitive niche or industry they still gamble to launch their own casino.
Gambling operators know how gambler thinks and they know their strength and weaknesses, so if you want to make money from gambling, be an operator give what gambler wants to make them stay in your platform, the longer they stay the more money you can make.