How else are they going to recoup their money? Some of the bonuses they offered at the beginning were crazy. I ate, now I’m good lol
I heard a few of the sportsbooks upon launch in NY weren't allowing people to cash out winnings in full, if they were won from free play / sign-up bonus money. If you got a free play, won off of it, cashed out, and deleted the app - you won. You beat them. Most people come back, again and again and again, and lose more than they win. Usually within hours of using that free play.
The straight ads blasted everywhere probably aren't anywhere as affective for bringing aboard young, new, novice bettors compared to the endless amounts of screenshots showing winning parlay tickets on social media. I suspect some of the "gambling influencer" accounts on twitter and tik tok that post plays, winning tickets, etc, are directly controlled by the sportsbooks themselves (even if they didn't start out that way)