As long as they don't use 100% the same steps, that will not be a problem. One casino should have unique than the others so people will know the different and attract them to join. It is why the team need to be creative and figure out what they can do to make their site is looks different.
If they just use the same as other casinos, people will not have intention to join and skip it without take a look more. They will consider that casino may scam them without take too long especially if they start join and deposit. People now become smart to research and get the casino they want so the team need to be careful.
If Rolbit is not a big and successful casino, scammers will have no or very little reasons to copy Rollbit in order to find victims and scam them. It is hard for successful companies to have no impersonating websites that launched by scammers with hope of finding naive people and steal money from victims.
It is excellent that community quickly detected that scam website and ruined their scam efforts to save many people.