Fraudulent actions against player's can kill any casino business, because once a casino take gambler's money without any justification and against his right, such player will never leave them to be but will put up a fight by reporting and questioning their reputation in the crypto gambling market, this bad reputations have fast effects on the casino and there by eventually exiting the market unexpectedly.
It reminds me the case of Betnomi.
They pretty much got thrown out business because of their fraudulent behavior against the same people who make them big in the first place.
I won't even mention other disgraceful examples of casinos who decided to committ reputational seppuku by chasing money at all cost, like what happen with 1xbit and 1xbet.
I think a good signal a casino is in decadence because of their action, it is how much they rely in advertising in order to keep their numbers high, and how much they opt out of allowing mouth to mouth reputation from bringing new gamblers to their casino.