For an online gambling platform, focusing on one game is enough as it attracts players that seeks consistency on a game and doesn't want any other features because somehow if they focused making a good game it might out stand other platforms that offer the same game (if and only if they can make a best version). It was like making a better rip-off of a common game. Yet, for me, I preferred some platforms that I can enjoy many games with many options and features to take.

Also, if that specific platform that offers only one best version of a gambling game, they might wanted to have a good UI/UX as well with no fairness issues.