I agree with you, or atleast somewhat, but at the same time, there are a lot of games that you can't get the same quality in the past that you can in future gens because the hardware isn't powerful enough to do it. Will list some below.
Older consoles can't handle all that's going on in open world games to work as well as they do in the newer gens. If you own a PS2 or Wii, I'd recommend Scarface the World is Yours over any other open world game. If you own a PC and PS360, I'd recommend The Saboteur, Saints Row the Third, and GTA5.
On older consoles you also don't see many combo 3D games like Devil May Cry, etc. Nightmare Creatures on the PSX and N64 is one of the only really good 3D combo heavy action adventure game with a lot of exploration throughout the stages. The game is slightly better graphically on the PSX, but the N64 version is the best. There are two characters, and while Nadia works fine on both versions, Ignatius has some awful hit detection with some of his best attacks on the PSX version, many times going straight through the enemy. Ignatius works just fine on the N64 version. Although it could also be the PS3s backwards compatibility that's making the hit detection go out of whack for Ignatius(I no longer own my PSX to test this.)
I wasn't much of a fan of the first Tomb Raider on PSX, Tomb Raider 2 is where the series got good. Problem is, the game was limited by the hardware. Play any Uncharted game and it's basically Tomb Raider with much better everything. The only difference is that Tomb Raider has a bit more exploration with secret areas and what not, less automated jumps to make, etc. Tomb Raider does have those jumps you know you made but Lara failed to grab on, something that always pisses me off.
Then there's racing games. If you're into an futuristic racers, nothing tops F Zero X imo so you've got that. Need For Speed Hot Pursuit, Top Gear, and Top Gear 2 are some of the best racers you can get on SNES to PSX imo. But racing has went through so many advancements in control thanks to the hardware. Test Drive Unlimited is not only a beautiful looking open world game with over a thousand miles of road, around 300+ races, and a lot of vehicles, but as a simcade the game controls exceptionally well(my favorite racer.) Need For Speed Hot Pursuit 2 is the best standard simcade racer the genre has to offer imo.
So anyways. Just my view. I'll continue to purchase future games and collect those I consider good as well as picking up games I've overlooked for past consoles.