I agree with you that if they can upgrade their server/system then they will have to loss many existing users and also they will not be able to attract new users even if they try to advertise more and more. To overcome the problem they must have to make to site user friendly otherwise their business will be nothing but destroyed.
Sometimes I think that casinos are often late in improving their performance and will start upgrading their servers once they get a spike in the number of members. The casino must realize this so that they do not get complaints from members when they play or make financial transactions. A user-friendly site is a must have for casinos so that they can develop better in the future. In addition, this can make their members feel at home playing there.
you said that the gamblers needs a casino platform that doesn't have much pictures. I want to know if you're in looking out the colourful designer of the gambling website of a casino because the picture of a platform does not have to do anything with the gambling what gambler's needs is good reputation on the site so they are not care or after for the background of the site provided that the site he's giving them whatever thing they needed I think gamblers will you like to patronize society that give them all the needful
I don't mean that. Maybe their fans prefer casinos that have a primitive or old-fashioned way, like @delfastTions said, so they won't like it too much if the graphics or platforms are too much. We are not talking about the casino's reputation because, in my opinion, the casino's reputation is the main thing. But not all gamblers think only about the casino's reputation, right? Especially for those who just want to have fun for a while.