Interesting topic. I think it's because crypto casinos have not evolved. I've also been around for many years and basically nothing has changed except the UI. No new innovative gambling concepts, nor new interesting gaming concepts. Even the bonus concept is old and boring. Everything exactly the same as already 2012, so why should new casinos have a large influx to keep themselves in the long term? Stake.com is an exception because an established crypto gambling company is behind it. I have been waiting for a really good decentralized casino where you don't have to worry about your funds disappearing overnight. That would be the next big thing.