Yeah, I don't think it's so much that Sony doesn't see PC as a direct competitor, but that Microsoft is pushing them in a direction where now they feel they can't afford to cut themselves off from future markets that might be much more relevant and less niche in the future. If Microsoft didn't switch releasing Xbox exclusives when it came to PC I don't see Sony bothering with the PC market. Feels like something they were more reluctantly dragged into as the market of gamers started changing.

Also, even with the rise in PC parts due to stuff like mining the demographic had changed too where kids are growing up watching streamers, wanting to stream, so lot of people they follow using PCs. Guys like Linus are pretty big youtubers too changing the accessibility of PCs from this obscure nerdy and complicated out of reach thing into something more people are wanting to try if their interest is piqued.