If Dark Souls 1 + 2 + 3 on PC didn't make people buy PS4 for Bloodborne, I fail to see why Bloodborne on PC would make people buy PS5 for Demon's Souls
Bloodborne alone probably won't. I doubt many PC-only gamers picked up a PS4 for just one title. Bloodborne and Horizon make a stronger case for two potential launch exclusives for a brand new console.
Would I have gone with this strategy if I were the SIE CEO? Probably not, but this is what the top-level management at Sony believes and has stated, and it may or may not work out for them.
Ignored the context of multiplatform games, I see.
Ignored Chandoo's list of played games on PS4, I see lol. At a quick glance, 83 or 117 games Chandoo has played on the platform are multiplats. You may argue that some of those were before he got a PC, but he recently played RE3, The Division 2, and Modern Warfare on PS4.
https://psnprofiles.com/adnan791986
What better way to "entice" people for a full experience with minimal effort?
They aren't enticing people for the full experience. They're enticing people
with the full experience for forthcoming releases.
They barely make any money on hardware and "embracing" the ecosystem would entail switching to Sony.
Source on the part where they
barely make any money on hardware? They were break even close to launch. The PS4 hardware has been profitable for a long time, and with subsequent die shrinks, reduced RAM cost, and manufacturing efficiency, it's likely quite profitable for a console that's only seen a single price drop since launch.
As for embracing the ecosystem, there are enough exclusives released each year for it to be worthwhile to Sony. The
average PS4 owner today owns 10 games, and Sony appears to be pretty happy with that figure.