Because consoles define the baseline for game development? As it has been for many years now. This isn't something new, you and I know it very well. Also, low specced gaming PC from 5 years ago isn't the same as today's low specced gaming PC. And today's low specced gaming PC won't have the exact same specs in 5 years from now, it will be much more powerful than XSS. It's laughable to think PC will be the lowest common denominator and not XSS in a couple of years from now.
Yes, of course, Forza Motorsport 6 Apex is a great example for you. It came out in 2016 and required a minimum GCN-based graphics card on PC at that time (because X1 was GCN-based), previous-gen TeraScale 2-based GPUs didn't work at all as they don't support DX12 (feature level 12_0). Similarly, the requirement for next-gen is DX12U capable GPUs w/ feature level 12_2 support which, according to MS's
blog post, is a "huge jump" from 12_1. And we've had GPUs from NVIDIA supporting feature level 12_2 for the past 3 years on PC, only now consoles are catching up. Do you think RDNA 2 and Zen 2 will still be considered the latest and greatest in the PC space 5 years from now? NO. Those architectures and even later generations will become common by then. If MS or any 3rd party studio decided to make a title that heavily relies on SSD (like Rift Apart) and takes advantage of DirectStorage/RTX IO then they're going to impose M.2 SSD requirement without a doubt.
As soon as games aren't made for Xbox One anymore and devs require GPUs with FL 12_2 minimum. We know for a fact that 4A Games' next project will require GPUs with FL 12_2 minimum (that means RTX 2060/RX 6600 XT and up only) anything below won't work (unless they happen to support FL 12_2) just like any pre-GCN cards didn't work on the then next-gen titles.
It happened before, and the generation before that. Microsoft themselves have put a hard requirement with their own big racing title (e.g. Motorsport 6 Apex), no less, and blocked out the majority of pre-GCN GPU owners. Are you going to deny they didn't? It'll happen again. This is how tech moves forward.
That depends from game to game, engine to engine, and even scene to scene. Features like SFS will help but they can only do so much when you have a limited amount of memory. For devs like Moon Studios (creators of Ori) XSS memory or GPU power won't likely be a huge issue. Studios like Coalition developing for Series X and PCs will most likely have to find unique ways to keep the mem usage from going over budget on Series S, it's going to be an additional step in the development process just because of the Series S. Unfortunately, this will only be a problem on XSS. Gaming PCs by default will have 16+GB of RAM.
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Since when is this a discussion about "favorite console maker"? What does that even mean? My discussion with you from the beginning on this thread has been about XSS being the lowest common denominator against PC.