Any casino that claimed to be decentralized are running the business at its own risk, no casino should claim to be decentralized unless they are operating off the radar or in a country where decentralization is all that matters to them, FED forbid running an unregistered casino and the penalty is very severe.
The web3 name is just an attracting strategy, I have not seen any one casino that's truly decentralized or fully functioning on the web3, many new casinos are looking for a more effective way to attract many gamblers and they have to use what is presently trending in the world today, which is web3, metaverse and gaming and AI.
Any casino owner will proudly do the same today.
A decentralized casino and a centralized casino without a license are basically operating the same way, without paying any taxes and running off the radar and that is the reason why usually see authorities hunting down some casinos that are unregistered and unregulated, so decentralized casinos are probably going to get targeted too.
And you are totally right that most of the time, the name of web3 is just used for marketing purposes since it is among the trends that are circulating within the crypto community these days. From personal experience, I've only witnessed 1 decentralized casino in my life, it was announced on this forum though I don't remember the name, it must still be there.
When it comes into a business which does involved huge money in terms of incoming and outgoing then it would be understandable that government would really be coming after neither you would really be having a crypto based gambling platform or into those typical casinos that we do know or we do have today. I dont know on how it looks like about having that web3 is totally decentralized on the said way because if we do really see that there's still that authority or someone who does have the control which it is impossible for these platforms or owners on wont to be searched out. Gambling up illegally on the sense that
you are going against centralization.
In general, decentralization and anonymity does really matters but we know that when it comes to platforms or businesses then people would really be that confident on dealing up with platforms or companies which does have some license because anonymity and decentralization isnt everything. People does really have that likings of feeling of being secured which means that in speaking with casinos online
then people would usually be seeking for those who do have license but well having a license isnt a solid indication that you are dealing with a legit casino or platform.
You should really be digging deeper if we do speak about making some verification if you are dealing with a legit site or not.