Disney is essentially a collection of twenty or so companies arranged as a conglomerate: from what I can tell, there's not a lot of coordination between them. DVD is separate from Parks and Resorts. Renting points (especially commercially renting point) takes nothing away from DVD. In fact, they likely profit from it by selling more points to people who rent. However it does take money away from Parks and Resorts, which manage the hotels, as potential guests are ending up in DVC villas with rented points. DVD and Parks and Resorts are both under Disney Experiences. What it would likely take is a manager from Parks and Resorts to complain to Josh D'Amaro (who oversees Experiences) that another division (DVD) is allowing unchecked commercial activity to significant decrease revenue at their (Parks and Resorts) hotels. That's likely is what it would take. And I'm guessing it hasn't happened yet. It probably will happen at some point. But the signs are all VERY CLEARLY THERE, as multiple people have pointed out, that commercial activity is regularly happening, including with brokers who also act as renters.