Welcome to video gaming. Games don't take giant leaps forward. In fact no medium does. Everything is iterative. Nobody gets spontaneous ideas, everything comes from somewhere. You mention how you love innovation and ambition. But what happens when these don't work? There are games that try new ideas all the time, but do most of them work? Probably not. NeverDead is a good example, a game that tried to do some new things, but fails. Video games are iterative beings, something all of sudden doesn't just get better. It gets better because ideas are constantly refined. This gradual change is what I think is best for the industry, new ideas may seem great in the slog of retreads we have now, but iteration of the same ideas also refines all of the things we don't like about them. In short ideas become better with refinement.
Now lets talk about Uncharted. People like Uncharted because it's like a pretty good action movie. You sit on your couch, you make some popcorn and you sit down and enjoy some good entertainment. It's not the best game ever, not does it try to be. But it accomplishes all the goals it sets out to do. It's a neat little fun ride, some neat characters, fun plot twists, interesting game play and some cool puzzles. Uncharted isn't some great messiah of video games, it doesn't set out to change the genre. It's a pretty good game, with a pretty good story.
Not every game has to be excellent, but I think, if most of them were pretty good we'd all be enjoying ourselves a lot more.