Well, since we already know Sony isn't going down the same path as MS, I don't see why they are included in this poll. I guess you could change Sony to the 3rd parties that choose to enact some form of DRM themselves on the PS4.
As for the poll, I say about 10M-15M. Of course, you also have the core market that will probably turned off by DRM and (almost) always online, even if they don't actively voice this opinion online. This pertains even more so to smaller countries/regions in EU, Asia, and SA that don't have the most reliable internet, or any at all. And then you have the friends and families of those gamers that may be swayed by them or just decide to purchase the console they have so they can play together.
So, while this may start out relatively small, it has the potential to balloon to affect greater than the original 10M-15M.









