I do think they'll bring it over. I think Sony's strategy going forward will be to release their exclusive backlog on PC after they've got the initial sales on PS4 /5. There's no reason for them to not bring them over, really.
The consoles don't matter anymore imo, it's the ecosystem that does. People that had a PS4 are gonna go to PS5 presumably because the majority of their libraries are now digital and they want to keep the stuff they bought, just like you would on Steam. Microsoft is making a killing releasing their exclusive properties on PC, Sony's definitely watching and thinking the same thing.