> 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".
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".