Are you suggesting that what is made on a sale supposed to support the business model for 2 or 10 years after? Why should Disney have any expectation beyond what income is generated from an original point sale?
Each point sold, if held onto the remainder of the 50-year RTU is exactly what they should expect to earn from the sale of that real estate interest, as that would be the right of that owner. There is no obligation from any owner of a point to “help them going forward.”
By that logic, Disney should have a right to to get in on the action when a daughter inherits a contract from her mother who PAID for the points. That inheritance doensn’t benefit Disney at all. In fact it is in direct competition as a potential buyer.
Once sold, Disney should have zero expectation around getting additional income beyond the dues that support the products maintenance. The resorts operate just fine and Disney generates enough income to support the continuation of the product. How much more does Disney need to squeeze from a sale? Given how few people actually know about resale, and the rate by which Disney sells out new properties, how severe is the resale competition?
DVC has been a huge financial boon for Disney. I would argue as a stakeholder with vested interest in the success of this product, adopting your “its in the contract so it’s legal and if it’s legal it’s ethical” is more detrimental and poses a greater risk to the future health and viability of the product than any resale market ever could.