Actually, it appears that they probably have almost no trouble renting out the Bungalows. In the next 3 weeks there are essentially NO Bungalows available to rent, from Disney or from
DVC points. Ergo, any that broke MUST be rented out.
It is true that on most resorts, there probably is not that much 'Breakage.' That is why I only talked about Breakage at Poly. The Bungalows break, very very frequently. There also is almost certainly some breakage at the other resorts you mentioned. BUT, the Lock-Off Premium is entirely different from Breakage. And it starts immediately, once all the Dedicated Studios are reserved, and the DVC Members then turn the the 'Lock-Off' Studios. They don't even realize they are getting it from a lock off. They only know that they wanted a Studio and one was available, but by selecting it, they separate the lock-off and create the Lock-off windfall that then goes to Disney.