I don't think so in gambling games for me it is everything about luck, maybe some short time of time you will have luck, win something and make some money, but in long period of time i don't think so, you can start losing and you can't live from gambling 
it's depend in gambling games, because some gambling games is not pure of luck like sport betting and poker games. you need to a skill and knowledge to play it.
Well it's not purely skill and knowledge since sometimes there are events that people don't usually expects especially on Sports betting. For example is the bouts of an underdog, usually the most popular one is the one whose getting a lot of bets to his win.
Poker Games and Sport Betting is dependent on your Skills and knowledge but it is also depends on your luck that time, if luck is coincidentally into your favor. I don't think that it will be called gambling without using some luck.