They made illegal gambling not only offline gambling but also they have made illegal gambling sites which is online. Many sites allow access even if they are not legal on that site but many a site cant be opened from the IP of the united states of America. I use a VPN so by mistake I opened a casino (bitsler) and came to know that they do to allow users from the USA.
If the user is from the US then he must carefully understand the requirements in the casino because even if the casino allows the user from the US with access using a VPN, he must confirm to the casino team that KYC from the US will be accepted. Many popular casinos ban US users, so I don't recommend that you use them unless you understand the risk of account bans or assets being frozen, but I don't know of any other alternative casinos friendly to US users so my assumption is that many US users are switching to offline casinos.
It is a very good assumption and they are surely doing it, for me it is something that is very intelligent, there are many friends who are in the USA, and some are interested in entering the casino to make money, because supposedly life there is making it difficult, I don't know, it may be like that, in fact if I have recommended good sites, including stake.us (as I had already mentioned before) what happens is that it is very difficult to compete like this with physical casinos, because they are "The Vegas "which is the total paradise of casinos, this makes many players prefer it, but for players who are far from Las Vegas, they usually choose casinos that do not cause problems and are online.