I am not sure if there are many sites that has this feature but I do know one which is a very reputed gambling site.
BC.GAME has an internal swap called as BC Cwap which lets users swap their coins for other coins.
Are they allowed to do that? I thought their licensing firms don't allow them to have things like that. I remember maybe a month or so ago, a casino was facing issues because their license was expired and they were providing some kind of trading opportunity on their platform for their gamblers, and it was being discussed on the forum.
Casinos need to stay with what they are supposed to offer and don't go out of context because that can obviously be an issue for them in the long run, it is not really worth getting your business closed only to get a little more profit.
I think license issue is not that important for some of the biggest names, it's more about having separate entities and yet still having the same webpage. I am not going to tell which one it is, but one of the companies are very very against the law in one nation, and yet they can sponsor a team there.
Well, they have another company registered there with the same logo, so that means when they sponsor, it looks like the legit one with the same logo sponsors them, but the bad one is the one that gets the attention, we all know what they are doing there, it's just a trick but that trick is allowed so it's fine, nothing wrong with that at the moment. I believe that the same could be done for any company if the license ever caused any trouble.