This theory is not ruled out, I think that in the future if these casinos are well maintained, they will have these tokens as treasures so that few can access, this is something that normally we as players currently see as any currency, but when we see the development if they are going to be relevant, there are many who should already be buying, everything is beginning to develop due to the current market situation, it is something that cannot be avoided, because bitcoin is low, and while it is like this it is difficult for the demoas tokens and altcoins may arise, those who decide to invest right now is because they really have a way to cover possible losses.
yes, it is true. if the gambling token owner always develops his company, the token will also have good value in the future.
as you said if the company always develops its gambling company, it will definitely have a good reputation and be known by many investors who want to trust gambling tokens as a promising future asset.
and i'm sure, one of the gambling tokens mentioned by the OP will someday have a good value in the future