It seems most of the bigtime gambler is now prefer to use the cryptocurrency when playing because of its anonymity. If ever you want to experience a good gambling game its better to use fiat currency and go to the casino and play different games. I know in online gambling it is also accept fiat currency but sometime it takes a lot of time to deposit unlike in cryptocurrency that just take few minutes. For me, I will rather use cryptocurrency in playing gambling than using fiat because I want to secure my personal information.
But not all of the bigtime gamblers does use the cryptocurrency now. I highly believe they miss the feeling of going out to go the casino to play games. Because sometimes, the best feeling of playing casino is when you have other people playing with you as well and you can see each others. But since the virualization of online casinos and gambling sites now do already have a chat box for users, it makes the feeling real as well.