That's a good point and it cuts against FSR. After all, Xess supports Nvidia, AMD & Intel graphics cards. As a bonus point - if you support Xess you get DLSS support bundled with it from
streamline. A game developer that chooses to use streamline will get universal upscaling support, superior
visual quality and you get 2x upscalers for the price of one. The newer versions of Xess (version 1.1 or newer) now has great visual quality and performance for both Intel's XMX & the universal DP4A variant.