> I mean, nobody really conflated these categories when it was just Blackberries and video game consoles. Do I get to add Xbox units to this too?
Did Xbox or Blackberry serve as direct substitutes for traditional PCs? No. Have Android and iOS phones and tablets serve as direct substitutes for traditional PCs? Yes.
> Did Xbox or Blackberry serve as direct substitutes for traditional PCs?
Yes. If you don't think a Blackberry served as an entire mobile office, almost replacing PCs for most use-cases, for millions of road warriors, then you never had one or lived through that time.
The Xbox line has replaced PCs as both a gaming platform for millions as well as a media center and emulation platform for many many others. XBMC after all means "Xbox Media Center".
Did Xbox or Blackberry serve as direct substitutes for traditional PCs? No. Have Android and iOS phones and tablets serve as direct substitutes for traditional PCs? Yes.