Its a tricky question. The way I see it, gambling's always kinda been about putting something on the line while hoping to get more back.  If someone goes into it thinking they'll probably lose their money but they just wanna have a fun night out, that makes me wonder if they really count as a true gambler.   

I can see your point about them trying to stay in control by focusing on the potential loss. It's like putting up a wall so it don't hurt as bad if they walk away empty-handed.  But even if they're being careful with their feelings, they still decided to play those games where you can win or lose big and  so maybe it comes down to the choice they made not what they're telling themselves while they play.  Does that negate their status as a gambler? I don't think so.