PS3 -> PS4 conversion of Heavensward only

[Ametrine]

Snip.

By your own logic, this is moot as the deal here is to encourage PS3 players to finally make the switch to PS4. As in, buy a PS4.
That unquestionably benefits Sony.

Shoot, the only reason FFXIV was even on PS3 before PS4 was contractual obligations from SE to Sony. 1.0 was fully intended to hit PS3, but it was literally impossible with how poorly put together it was, so a huge focus of 2.0 was making the game to be scaled as low as necessary.