You are absolutely right. I saw one decentralized crypto casino on service board asking for a review from people to give their opinion about the casino, the job was were done and I just check the casino when u saw this thread and guess what, the number of users that joined since I last visit are not up to 100, this means that customers are not coming, and when I also check the smart contract execution on both ETH and Matic, there weren't much going on, people are not playing.
In today crypto adoption, people are ready to give up their privacy for some little fantasy of the casino and ignore the bigger picture. Decentralized remains the best alternative but even the casino are not building on that, how many decentralized casino has a good user interface like Duelbit, like Stake and other popular casino that dominate the crypto space.