I don't think casinos offer better chances at winning at first. If that was the case it could be exploited easily.
If someone wants to be certain that his rolls are fair and worries too much of things like this, then he can gamble on probably fair casino games.
I think the more realistic issue with luring in players is how easy it is to win on no-stake rolls and fun token rolls. In non provably fair games this can be a real issue.
It's what you'd call a beginner's luck. Yes there's no casinos that offer that but I'm sure there's some casino out there that's offering that kind of first win reward but I don't think that they're that eager to give you the win, maybe if it's your first win they will give you some sort of bonus. That's not really an illegal thing to do though, the way they lure is unfortunately within the legal bounds of the law so they're not doing anything wrong even if we want to make them look bad for it, they're still doing what any advertisers in the world of business do, attract customer by any means necessary. I mean how come we have not complained about the appearance of a quarter pounder on TV and then comparing it to when we finally order it? That's deceiving too right?