Nik meant that DrivethruRPG is the exclusive PDF source for WotC's back catalog and (separately) also have a POD service. So far, WotC hasn't made any of their PDFs available for POD. Check out the White Wolf stuff on DrivethruRPG, and you'll see that, where it's available, it's just on the same regular page as the PDFs.
Ah, gotcha! So yeah... if WotC thought people would actually pay for a printed Basic game... they could certainly set that up with DriveThru. Get both them and DriveThru a little extra cash.
Although one question on it though would be if the additional material they added to Basic for all the modules that get released was their own separate PDFs for download, or if they got added and updated inside the single Basic game PDF. Because that would potentially lessen the viability of the PoD, if it had to get printed and reprinted and reprinted with each additional update.