I think you are making too many assumptions here.
I gamble, small amounts of money, because I find it entertaining. It's fun. Maybe I'll win, but I will probably lose. That's ok. The way I see it, I can spend $100 going out with my husband to dinner and a movie OR we can go to a casino and spend $100. I've spent the money either way, and I have been entertained in either circumstance. But if I've been at a casino, it's possible that my evening entertainment could be free, or that the casino will pay me (!!) for my entertainment.
Isn't it possible that Bennett just enjoys the game? I do. Heck, I play online for free! LOL!
Not just possible, it's very likely. But it's also possible he enjoys the high roller rush even more (or less).