To lure and entice these high-potential players, you need to introduce them to a benefit that they are not already enjoying on the platform they use.
Even after luring most of those high-potential players will continue to use the platform that they already use. They're much happy with the platform/s that they use and it's really a tough job to convince them or to lure them to switch to another platform.
The duty of luring/convincing them is not so that they abandon the casino that they already play on; there are gamblers who would play on various casinos, and there is nothing wrong with that.
Luring/Convincing these gamblers is just for them to have another option in case the other casino that they play on starts messing up tomorrow, which is not impossible.