Well Sony couldn't for a lot of the games as the PS3 architecture is so different to the PS4, the only way they could do it was to port PC versions of the games for the PS4 and add trophy support, so anything that was PS3 only or never had a PC version won't ever see the light of day on the PS4 .... I recently finished FFVII on the PS4, it looked so much better than the PSone version on the PS3.

Where's this bloody update....it's stinking Hot here ATM, and I'm sitting in my spare room with two desk tops running, it's like a sauna.