Personally, I welcome indie games. There can never be too many indie games on GOG, as long as they're good.
As for the "good old games", GOG has shifted from selling (only) those a long time ago, and I think that's a good thing. Like others have said before, GOG still releases old games, they just seem fewer because the releases of indies and "AA" games are so many. If you're looking for a legal place to get old games, GOG is still the place to go. Anyway, there's only so many "old games" you can release, most of them are in legal hell, others the publishers simply won't sell digitally; whereas indie games are much easier to publish. Plus, if you took the time to browse through some of those dreaded indie games, you might just find something you really like. Just be a bit more open-minded.
There's also the question of what, exactly, is an "old game"? For instance, I see the OP has a Mirror's Edge avatar and, since they think GOG sells too much indies and not enough old games (but they do sell Mirror's Edge), I assume the OP thinks of Mirror's Edge as a good old game. It certainly is good, but is it an old game? It came out in 2008, 9 years ago, not even a decade, which, to some of us -- myself included -- isn't nearly enough time to make it a "good old classic" like System Shock, the Baldur's Gate games, Planescape: Torment, the first two Fallouts or the Ultima games (or even the first text adventure Zork games, some of the oldest sold on GOG). See, to some, a two year old game is already a "good old game", but to some (I would assume most, even), a game has to be either older than 10/15 years or released before or around 2000 to be considered old. There's simply no consensus when it comes to what makes a good game "old".
So, instead of bitching and moaning about GOG not releasing any "GOOD OLD GAMES" anymore, how about we just enjoy the games GOG does sell and that we think are awesome, indie or not? I, for one, have been playing
River City Ransom: Underground -- a newly released "good new indie game" -- and having a blast. And that's what matters. More than old or indie or AAA games, we should be worrying about the *GOOD* part of "good old games". Because, you know what?, being an old game doesn't necessarily make it good. People seem to forget this a lot, but there were a ton of games that were just downright crappy, back in the day.