Honestly speaking why would you play on unknown or new gambling site where you can play the same game on the existing gambling site without having a problem? One reason is that they offer something that the existing gambling site don't for instance a opening promotions like free bets and many more. Usually that's the only way they can get players and also not because the gambling site is new it cannot be trusted.
I will say it's better to gamble on new casino than the casino you promoted under your signature because new casino have a chance to be legit one, while your casino are 100% scam even though it's already exist for many years 
If all casinos are collapse and bankrupt except your casino, it's better for me to stop gambling and only bet with my friends instead.