Yes, and there are still those players who are slots and sports bettors who move their bankroll to the bookmaker and regardless of the competition, they continue betting there and getting the odds or participating in exclusive slots.
I agree, I've seen those types of people or gamblers, but in physical casinos In online casinos, I imagine the behavior is similar, except that this information is difficult to obtain unless there's always an open chat where they already know each other and don't change their nicknames.
Online casinos seem more convenient to me in that sense Also, when trust is built in the casino, the person will bring more friends to play there.