Yeah, that's exactly why I can safely say I don't really care about possibly not getting an Xbox One (or at least not for quite a while).
During the 7th gen, getting both a PS3 and Xbox 360 was pretty worthless, considering almost all the good 360 games were also on the PS3, and it barely had any exclusives worth playing. I got both anyways (actually I bought all 7th gen systems twice...), but I could've easily gone without the 360 (would've missed a couple XBLA games and some shmups...).
So I figure that, once again, both consoles will get roughly the same library, and since the PS4 is seemingly more developer-friendly for now, it sounds like the better buy.