@ tuoyo
The PS3 is an all-in-one high definition orientated entertainment device, of course games are part of entertainment. It's even bigger than the movie industry, so IMO an all-in-one device should best target gaming.
It just happens the PS3 is the most powerful games console out there.
A lot of the technology which makes the PS3 the most powerful games console also allows it to be a great media player in a much broader sense, for example a Blu-Ray drive allows for watching Blu-Ray movies in addition to higher quality (or more diverse) assets like audio and graphics for games while providing faster load and eject times than rivals, the Cell allows the PS3 to have the fastest Java support for a Blu-Ray player, the default harddrive allows the PS3 to double as a DVR and firmware updates including the latest Blu-Ray profiles or new audio codecs, etc.