It doesn't need to be, that's okay!
I'm excited to play it. If I like the Remake(?) (Don't know if it is a Remake or Remaster), I may go back to check out the Original too.
Can't imagine it won't be on every platform imaginable day 1, even on Switch. It's a very linear, simple and level based game.
I mean, what's the point in platform exclusivity for a game which... Well, let's be real here, it's not going to sell gangbusters and it wasn't even all that popular back in the PS3/360 days.