Entirely obvious to me. They didn't even need to post their thoughts on it.
Very predictable.
Why would the console that is almost leading 2-1, lessen their current remaster strategy (that is working) by spending money on implementing technology that would cost them money?
I mean, sure, if the tables were turned, they'd probably be looking to BC as a way to satiate previous ps3 owners....but they're currently way out ahead. They should be thinking about the next big games, not last gens used games.
Additionally, we've seen according to infoscouts or whoever it was, that the biggest migration is from360 to ps4. It's not like ps4 needs incentives to upgrade. People are already picking it by 2-1.