My thoughts are yes you can blacklist a casino based on evidence, be it players statements or even casino statements. There are enormous ways of doing this.
For example, 90% of my communications are voice recorded and text typed when it comes to speaking with casino support, pitboss, aff managers ect…
My first online gambling experience was a pretty bad one. It was a RTG casino, I made my deposit won a modest 500.00 and was ready to cash out. I followed all the propper procedures and did not receive payment. I contacted the Manager of the casino and I quote ” what do you think were in the business of giving away money? “
Can statements like this be use to blacklist a Casino I say yes. There are plenty examples of why you could legally blacklist a casino. Some casinos use hooking techniques, false advertising ect…