Gambling is unique in different locations, by your assumptions, what do you think people around you gamble on the most in a casino?
Do you think table games like Baccarat, Blackjack, Roulette, Poker, pool? or Gaming machines like slots, random number games, or sports?
When a new casino is about to decide the games to have on their platform do they consider the popular games in the specific regions where they intend to make their gambling services available, or selections are usually based on popularity of games generally?
I'm 100% sure that in any country or region where any casino opens, at some point, it will include everything. Some have the capital up front and do it immediately while others do it during their operation. I don't see any particular reason why they shouldn't have everything. Ultimately, the more games they have, the greater the demand coverage. Thus, more customers, more bets, more money.