Personally, I don't think this is a move against the Vive, at least not exclusively. It's a move against cheaper manufacturers of VR sets coming from China.
The fact of the matter is that most of the hardware on the Oculus can be reversed engineered and built cheaply enough out of easily accessible parts, and the competition in the Chinese market is building a critical mass that will end up spilling to Western markets.
I mean, look at the number of headsets in
this article, or the mentions of higher quality offerings in
this other one. Headsets under or around $200 are very close, and most of what's being developed now in China already boasts its compatibility with Oculus-developed software.
The only chance that Oculus think they have is to close down the software and tie it up to their machine.