[ ..Fun stuff..]
Problem: nowadays that's pretty insane. Suppose a user buys an adapter with such chip and tries to enable standard Windows feature of virtual AP. And if it doesn't, it cries in twitters and facebooks "MicroSoft suxxxx!!111". Microsoft doesn't like vendors who do such things to them, and look at them like sh%t.
Hmm... That's indeed what would happen for a GNU/Linux system, but I thought with Microsoft the user is expected to say either "oh, this adapter sucks" or "damn! what am I doing wrong?" since it wouldn't occur to the user that it could be Microsoft's fault. Of course, that'd be even more true with an Apple product (after all, "it's soo pretty it can't possibly be wrong!").
Stefan