I also saw this happening, but didn't think it would be this soon.
So not only is the remaster enforcing PSN, but they are now also removing the original from Steam, and now anyone who will want to buy the game on PC, but doesn't have a region that supports PSN, they won't even be able to buy the remaster (which would also be me, so I couldn't even buy the upgrade, since the store page will be going away).
This is just dick move after dick move with Sony, and all for enforcing PSN. They'd rather try netting whatever sales they can get on PC via an expensive remaster, than two types of sales from the original and the remaster (which has the original casting a net over all regions).
Step right up come on in, feel the buzz in your veins, I'm like an chemical electrical right into your brain and I'm the one who killed the Radio, soon you'll all see
So pay up motherfuckers you belong to "V"