You are right, what happens is that Sometimes we take into consideration the age of some casinos and the way they have become known and for me the most important thing is the degree of trust and reputation that we know that they are casinos that are honest and that have no possibility of being scammers, at least the possibilities of them becoming scam are very minimal , but Currently we as players have many things in our tastes, and Basically according to that is what we say which casinos we may like the most, that is clear, that is why I think that there are fans of many casinos, of course roughly there will always be a tendency of some more than others.
Other things to look for are liquidity, terms and conditions, security concerns of the past and present, proficiency of their customer support service, payment mode, payment pace, the general quality of the platform, various limits, and options to play from. The list is just endless. Above all, the safety of our money matters most, if any casino has all the good service but errs in the safety of our money (whether intruders strike or it steals our money for itself), then it is not worth it.
I agree fully, it is like with exchanges. There was a time in which exchanges could blow at any time, even decentralised exchanges were misteriously "hacked", it is just ridiculous how often they closed - think for example Cryptopia or MtGox. The casinos are no different, regarding the honesty of the management and the compliance with users age is a big factor.