No, I clearly mentioned sponsorship programs, several times. Having personally worked for a game developer that was on the receiving end of such a thing, I'm well aware of that particular business.
I would argue that it has a good deal of significance to what you were stating (which was "nVidia's proprietary standards do not help anyone out, except those small amount of people who buy into them" and "Developers do ignore DLSS... unless NVidia pays them"). DLSS is one of only two major proprietary systems that Nvidia has in gaming anymore; the other is the ray shader reordering system in Ada Lovelace, which currently requires a specific API to implement. That's it, there's nothing else. Every other aspect of their GPU capabilities is supported in D3D12 or Vulkan via extensions (the latter is also the case for AMD and Intel GPUs).
Yes, that's a valid point - if you're an RTX user, then there's little point in using FSR. As to the question about whether those cards produce better FSR results than AMD, the answer
should be no, as they're running the same shaders but without multiple testing across numerous games, one can't be sure for certain.
Sticking a webpage into Excel and using a few functions is unfortunately a lot faster than manually checking every DLSS game in the list but Alan Wake Remastered, The Anacrusis, Anthem, A Plague Tale: Requiem, Aron's Adventure, Assetto Corsa: Competizione, Back 4 Blood, Batora: Lost Haven, Battlefield V, Battlefield 2142, Blind Fate, the Call of Duty titles, Chernobylite, Deathloop, Death Stranding, Doom Eternal, Dying Light 2, F1 21 and 22, God of War, Horizon Zero Dawn... well, suffice it to say, the above titles and others in the list are multi-platform.
Yes, there are categorically more graphics cards out there that support FSR than DLSS, but that doesn't automatically mean more games will be using it in the future. The performance of FSR is heavily dependent on the shader abilities of the GPU -- it's a fixed time period to run the algorithm, for a set resolution, so as newer games come out, with increasingly more complex graphics, older cards will no longer meet the hardware requirements to run them.
The desktop PC gaming userbase comprises
more Nvidia graphics cards than AMD/Intel ones so developers that are targeting that platform, for future releases, are going to naturally look at any mechanism, they can freely use, to improve the performance of their PC games. What they do for consoles is irrelevant - it doesn't matter that the PS5, XSS, XSS use AMD's GPU architecture when it comes to making the same game for a PC, because the majority configuration of that platform is Nvidia-based.
Ask me again when we actually know what FSR 3.0 is and it's been tested against DLSS 3.0 (assuming the system's functionally do the same thing).