Do you think that sport leagues should be incentivized by sportsbooks and casinos since after all sport leagues are the ones who make it possible for sportsbooks and casinos to profit from its bettors. Do you think that casinos should pay back the sport leagues? Sport leagues may even consider being more considerate to gamblers and allow platforms to have the most accurate data for gamblers to see.
On the other hand, being incentivized might push sport leagues into being biased. Since a lot more money is on the line, more match fixings might be created. But what about you? Do you see the pros and cons of having sport leagues benefit from sports betting?
The very raising of such a question immediately causes a conflict of interest. The leagues receive a share of the profits from ticket sales, from broadcast sales, and a lot of money from advertising. So why else create a huge problem out of the blue by linking bookmakers directly with them? Then EVERY match result will be considered rigged a priori. Even without this, scandals periodically arise when the public finds out the facts of contractual results (for different types of bets). So I don't see any advantages in this at all, but only one big disadvantage. The official financial link between the leagues and the bookmakers will only bring problems.