You also have people sending death threats to players because of their bets. The improved viewership by bettors makes the leagues more profitable, but that's not synonymous with better for everyone involved in the long run.

That's probably been going on for a while. Probably even worse tangible treats to players in the times when the books were more wholly controlled by organized crime with local reach. Makes you wonder about all the times a player is out hurt in the old days before a big game if they maybe got a visit from someone.