milking the whales. they all do it.. it's very lucrative and very immoral:

find the most addicted gamblers with big bags on your platform (it's in the metrics) and target them specifically

they assign personal handlers to 'work with them' , to keep them hooked and squeeze as hard as possible

it's profitable to have devs build custom games for individual users, tuned to their specific behavior..

it's a vile industry