Probably because you can get 90% of the PS4/X1 catalog on PS3/X360. I am in the same boat one hardcore gaming friend with PS4/X1, I got an X1(got it because I wanted to maximise my Gold subscription); but everyone else I know isnt in yet. Hell, I never even play my X1 cause there is so much on last gen.
The hardcore(by that I mean people that play/but lots of games) are bought in. The current gen wont see its best years for a few years.
Getting an XBOX One for me is like being in a bad relationship but staying together because we have kids. XBone we have 20000+ achievement points, 2+ years of XBL Gold and 20000+ MS points. I think its best we stay together if only for the MS points.
Nintendo Treehouse is what happens when a publisher is confident and proud of its games and doesn't need to show CGI lies for five minutes.
-Jim Sterling