I think it's the opposite. With this game they first milked the PS sales, then discounted it or applied price cuts, added it to their game subs and once it didn't generate more revenue there (getting the 100% for them) then they released the PC port, without negatively affecting PS software or hardware sales.
They prefer to sell games on their platform, because there they don't pay a 30% of the revenue to Steam, plus each player there buy an average of over a dozen games, plus dlc, season passes and microtransations, plus also pay their game subs.
So they may go closer to release, maybe releasing the games 2-3 years after the PS release. But once they consider they milket it enough there, and keeping some good games there without being ported to PC to make appealing to buy their console.