It is important to never ever confuse a token with something even remotely similar to a stock share or any legal instrument conferring property. Tokens are pretty much unregulated and they carry a million pages long disclaimer which can usually be summed up in: you are giving your money but you have not rights, particularly you have no right to complaint no matter what I decide to do.
Many thought especially those newbie who got hype that if they invest on casino token they also get a share on then but actually its all the same with buying other tokens in the market. The only advantage they got is they rely on the fame of that casino, they should also see if there's proper utility created for the token so that they can call it as a good one. Lastly take extra precaution on any action we do since sometimes what we think good turns bad so thinking more deeper before investing on this is really needed to do.
The important thing is that if the casino's token is usable enough, the project may be down for a while but will rise again in the future. Projects that have utility never die. All of the token or names that the OP mentioned here are still in the market with good reputations. Although OWL and TFS are comparatively new in the casino platform but they have good effort to their project.