It should be understood - Disney cares about only one thing - New resort sales. Not reselling existing resorts - which they do only because some people insist.
I'm am sure they are smart enough to realize that they cannot stop resale from existing. Resale occurs for two main reasons - dissatisfaction with the product and hardship buy the owner that forces them to sell the product. People don't sell there DVC timeshare because "Hey I can get $150 for it now - time to sell!"
So Disney cannot really control the number of resale contracts out there unless they start buying them all back - which they are NOT going to do. They do a certain amount of this - but it stays around 10-20% of the resale contracts on the market - and if you look historically it amounts to around 20-25% of direct sales. Look at the below chart from DVC news. July Direct Sales data totaled under 40,000 points at the 12 "old" resorts, and 160,000 at the two "new" resorts. (And this doesn't include Aulani - which would still fall in the "New" category.) So again, less than 20%, and even this number is on the high end of the range, where more typical is 20,000-30,000 points from resale most months.
If I look back a year when CCV was the prime seller - I see a similar number 134,000 pts at CCV, and 170,000 pts overall says 21% of sales were from older resorts.
Again - reselling old contracts is NOT what Disney wants. They buy-back an AKV contract at $110 a point and then sell it at $170 a point sure they make $60 a point on something they sold already - BUT, that AKV contract is creating a sale that they see as replacing a NEW Riviera sale - that they look at as $150 per point or more profit.
Disney's "best interest" should really be to keep the cost of resale relatively high while still differentiating the resale from direct. An ideal world is to be able to convince you that $188 at Riviera is "Worth it" versus paying $135 at Boardwalk - and there's good arguments for that.
Which is still why I don't get this most recent restrictions. They hurt resale value, sure - but they hurt direct value as well. It doesn't make sense.