Huge get for Playstation. 3 FF games, and all top quality maybe even GOTY level, console exclusive for likely a decade.
Svensson is Sony, why would you attribute his stance to SE. For Sony, they want a prior fan classic to be a system seller for their new console.
FF7 Rebirth is a AAA open world RPG, with 90+ reception and likely going to be GOTY. That alone would likely make Sony want to sign it for exclusivity.
In terms of sales, 7-10M, is huge for a 3rd Party exclusive or even AAA game in general. Also ties one of the biggest JRPGs audiences to their console, helping them get other JRPG fanbases.