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?
Owners of casinos and other gambling platforms are in for business, it will be unwise for them to choose game options without really studying the targeted market and region to know which games are popular amongst them or what these people are conversant with. Choosing popular game options will attract gamblers and even non gamblers to try out their luck in those games since they already believe they have good knowledge in that particular game and have high hopes of winning.
In my region, one of the most popular games is football, every gambling platform in this my region have options for people to bet on football sports. Ignoring these very option for other less popular game options will be foolishness on the side of the casino operators. This applies in every kind of business, know what your customers want or like and deliver it to them.