You were just rhetorical in your comment, seems more like going round and round in circle, this made your comment a bit too hatchy to understand, but speaking about suggestions, every casino that must be considered great must from time to time listen to the suggestion of their users, and try to work with some of that which is suggested to them by their community of users.
Lol, you actually mentioned my username in your comment. I guess that was a typo.
Many copycat casinos you come across might stem from the same group or idea of developers. When it comes to designing an online casino, you typically have the homepage, a betting page, a user profile, and games pages. It all boils down to the owner's preference. Even if they share similar designs, the user experience can still differ. Some casinos pay users to test or compare their platform and provide feedback, helping them identify areas for improvement. If I encounter two similar casinos with the same design, I'll choose the one where I had a better experience and found more user-friendly.
There are quite a lot of gambling sites or online casinos that have the same UI and other features, this does not violate copyright, in fact, competition will get tougher and each gambling site will try hard to provide the best service to their users. i also saw gambling sites that are owned by just a group of companies but they have many names of gambling sites and monopolies like this are actually what makes new gambling sites appear with little chance of making it big in the gambling market. just like you, i will only choose gambling sites that make me comfortable both in terms of security and fast response.