You are aware of the fact that PCs have to have a minimum requirement too? That minimum requirement is much lower than how consoles run games.
Actually, high resolution textures, especially when there's a whole lot of them rendered, eat up tons of RAM all on their own. That's why I don't even understand why so many small objects like weapons have 4K resolution options at all, it's so needless. Even 2K are often an overkill, only large objects need textures that big to keep the detail and reduce repetition.
No they don't. True, PC usually surpasses that within a year, but on a console's release date it's akin to a medium built PC. People who game on PCs usually have something a little bit better than an average PC build, and tend to forget what a non-gaming setup actually looks like. It's not a big difference, but ps4 performed a bit better than what you'd get in a PC for the same price.
I look at these comparisons of PC and ps/xbox games, and I'm mostly puzzled. Sure, view distance draws a bit further, and shader is slightly better on the PC version, but that's as far as it gets. And it's completely unfair to compare with maxed out settings, because PC that can run a brand new game on maxed out settings is usually far from average. A friend of mine got Witcher 3 as soon as it was released, and his PC, for which he paid ~1200 dollars only 2 or 3 years before the game came out really struggled on maxed out settings. He can run it at max now with a PC he recently got for a bit less than $1800, and seeing the ps4 version he said it's run on the equivalent of PC's medium settings. And ps4 came out 3 years ago, while Witcher came out last year. I'd say that's great for a mere console. Just to compare some more, my PC cost me around $150 more than I paid for the ps4, and I got it 2 years ago. It can't run Witcher 3 at all, and the PC was custom built by guys we know, so we got the best we could for the money we had. Furthermore, I don't meet the minimum requirements for Skyrim SE either. PS4, however, can run it.