That’s not a very strong incentive. I’m not really sure that’s an incentive at all. Most doctors have more than enough appointments. Their schedules are over

That’s not a very strong incentive. I’m not really sure that’s an incentive at all. Most doctors have more than enough appointments. Their schedules are overbooked. But even if doctors who needed more patient bookings could attract those bookings by saving patients money then logic would follow that doctors who have room in their schedule would consistently use the app from the article. Yet most doctors aren’t using it at all. So even if your premise is correct I think you’re greatly overestimating the surplus supply of doctors appointments and underestimating how steep/inelastic the demand curve is for healthcare. Mostly unrelated, is saying “surplus supply” redundant? I can’t decide.