I think you underestimate how much scamming pays. It’s much more than $99 per day, so unless Apple blocks the app immediately they’re still making money.
If you want it to really stick make them buy a bond against in such a jurisdiction. After one party has been burned for their 10k they'll find their former partner exceedingly aggressive in recovering their money and none willing to do business.
Furthermore most of such abusive behavior is trivially recognizable based on dollar figures involved, behavior, organic reviews, complaints. In this day and age there isn't much excuse for a trillion dollar company not to have automated 99% of the situation and employ labor to handle the rest.