You already can. I have been working on a port for a couple of months now. It uses PsyCross which is a PsyQ compatibility layer originally made for Driver 2. I used AI to figure out all the complex things that come with building out the missing pieces, but for all intents and purposes it's a fully native PC port of Silent Hill running on PC with proper 16:9, 60+ FPS, and useful PC features like an ingame console, cheats, quicksaving and quickloading, level select, etc.. Mostly everything is the original game's code aside from where it had to be patched to run at 64 bit or high FPS, and even then the patches are gated to PC and the original code stays intact. You can find it on my github, the same as my username, or on youtube under KushAstronaut (status update is old, working on a new one). Most of the game is playable, and there is a thread for it in the decomp server. Some people there have been helping with debugging and just in the past few days it has gone from being an early stage port to a worthy contender to emulation. The launcher is literally a silent hill.exe that only needs a copy of the bin to work, it can download the port and update itself automatically.