Buyerwillepb, I think the concern you raised is too much of a long term goal for them to handle. That would be far way down the road and not their immediate concerns which is to prevent a big crash locally that could affect nationwide.
I believe that unfortunately, we are viewed as a trend setter, price setter and the banks are willing to take some loss here locally, for example, holding a bag of inventory in order to hold on as long as they can on the price front or manipulate price with slow release and bidding practices among other things.
Again, my sixth sense says that banks have many tools at their disposal and many advantages to do this and you as an individual buyer will continue to function within their manipulation.