If they don't view the PC as a competitor why then do they not release their games on it day 1? Microsoft is the one that doesn't view the PC as a competitor which is why the games are available there day 1.It's not though. PC is not a competitor at all to Sony. You are helping a direct competitor with your exclusive games.
It's the exact same logic applied somewhere else. Export some of our old games to another platform to see if we can make more money and expand the audience.