It's a personal perspective thing. There's probably more diversity in gaming and more niches being filled than ever before.
Five years ago we'd have layed an egg to have gotten the engine/weapon modelling of a P51 or A10C like we have now, or online races with people across the world where the left-front tire temperature makes all the difference, or something where you can create a galactic empire using massive space fleets and stock markets, or a zombie game where you have 200km of bushes to lay in before stabbing your friend in the back, or graphics that make you look twice before you can tell if it's real or not.
In literature we can classify all known stories into seven basic types. Everything you read since about 1604 can either be considered a clone or a sequel. But still the stories get written..
Absolutely I agree big titles (movies, games, books) are safer derivatives, but then we're old enough to have seen the start of this industry which gives us an interesting perspective. What I don't accept is that everything is either done or we're finished in any way. The games are looking good, it might just be more a case that as some people pour into the hobby then others get tired and take a rest.
Mobile, HTML5 browsers, movement controllers, GPU parallelism, AI, ubiquitous connectivity - what we see today is how we feel when we pick up a black and white Gameboy and laugh. There's lots to come.
