I wouldn't open it for profit sharing through token sales. To use this method is nonsense. If a casino owner is willing to share profit with investors, he can just launch the good and old feature "bankroll investment". This way interested investors deposit their BTC funds into the casino's wallet, and start receiving interest in real time, as gamblers lose and the house wins. It's pretty simple as crypto industry used to be during its first decade of existence, when regulations and elaborate scam schemes weren't a thing yet.

Anyway, casinos aren't in advantage against their competitors when sharing profit with customers and investors. Casinos need more than that in order to overcome the other companies. Bitvest is an example of that: they are a spot for investors, but got outdated as the years went by, the industry evolved and the website remained the same. As consequence, their traffic and volume of bets are low compared to another crypto casinos which were launched later.