A casino can cheat customers. In this case, the customer becomes helpless. Most gamblers believe that the statistics of admitting such fraud can be very high, especially in casinos that do not have a license. But i think the license is important but more important is the comments of others about the site. There are many casinos that can show license but failed to provide the service. Moreover, a gambler can undoubtedly conduct gambling comfortably on the sites that have a good reputation on Bitcointalk forum. This forum is enough to know what are the good casinos.
There are many online casinos outside our community that are also reputable, and of course there are also many that can't be trusted. Likewise with crypto casinos in our community, even some of the casinos that we have here, have a high reputation. so we have no doubts about the license validation they have, especially in terms of service.
As for casinos that can cheat their customers, like you said. we have a community here, of course this will be very helpful, especially for beginners who want to play at a trusted casino. there are also casinos that have a bad reputation, many of us know about it so I won't mention it here. however, regarding casinos that deceive their users, whether it's not paying winnings, suspended accounts, or whatever it is that leads to harm to us as users. we can discuss it here, and it will be the judgment of the other members.
Despite all that, I've had no issues with my favorite casino so far. as long as they can maintain their reputation, we will be safe and avoid things that lead to losses.