They are completely different settings and there is some logic to your theory - with the convenience that online gambling gives you, that you can do it from your own bed without getting dressed or while sat in the bath, it will draw in even the laziest or socially shy gamers that are unlikely to visit a real world casino very often. Everyone hopes to make a profit in both scenarios, but the odds will be equally stacked against them and the house is going to win over the long run. You will find hardcore gamblers willing to go into the casino every day, just as you'll find them online. It's the same for people who are seeking out a bit of fun and they can certainly do that in bigger groups when visiting a physical location.