I get the OP's point, premium experiences or at least ones that feel more "prestigious" or are usually the most flesh-out ones seem to have gone down in numbers over the years due to the various factors the industry is going through, of course though you can't that the additional stream of distribution via digital has changed how we can find games easily through these means. Multiple of them are prolly unaccounted for, especially on PC.
Easier means of publishing one's title has become so easier and the means to which you can make a game have also, but the abundance of them going the digital market alone will make most of them go through while mostly unnoticed. The market is just imo unviable for such a quantity of games. It goes through most like white noise.
Personally, the exclusive per system chart is the most interesting ones cuz it's indeed surprising how "few" exclusives the PS4 actually had throughout it's life despite it's leading position by quite a margin.
Then you've got the Switch with it's whooping 170+ exclusives which is just unbelievable almost but considering Nintendo output this gen alone ... No wonder this could be easily considered has some kind of golden era. Also, it kinda goes against the grain of the ol' rethoric of exclusives "not selling" consoles anymore.
Switch Friend Code : 3905-6122-2909