Good precedents on how vendors feel about the role of DRM as a protection mechanism for not only the "content" but the business model have already been seen, assuming we care about the rights holders. A couple that come to mind and are both relevant in different ways are Apple vs Real Networks and the Universal Garage Door Opener case.
In the Apple/Real instance Real figured out how to pretty much do what's being done here: get stuff bought from there store onto apple's device..while preserving the locks by transmogrifying them.A CLEAR consumer benefit...a win-win. Anyone here remember this?
Real was told to cut it out or head to court because this was in violation of the DMCA, but more telling was that it revealed how the vendor (in this case, Apple) viewed DRM as not simply a copy control mechanism, but a supply chain one. As apple wasn't the content originator their interests lay in controlling and constraining the supply chain for "Premium" digital music.
Look familiar?
This was seen with the Garage Door openers as well...a CLEAR consumer benefit. The problem again is that it broke that sole source chain. They used the fact that the control codes were (very poorly) encrypted and obscured to make that go away...
This case more interesting in another way as they OEMs were the content providers, that content being the control codes.