A lot of us do, but sadly licensing is definitely the culprit here for not as many being released these days.

Here are some things TeT said about that:
TheEnigmaticT 1.
TheEnigmaticT 2.
TheEnigmaticT 3.

Mind you, that a game from the mid-00's is still about 10 years old, and as such easily fit the commonly stated definition of "classic" from GOG's points of view.

I actually wouldn't mind if GOG would release more old but not too old games DRM Free. Like from 5-6 years ago. Imho many of those are classic too.

So far in 2014
67 games released
22 (33%) Day 1 releases
13 (19%) Pre-2K releases
16 (24%) 10+ years old

Sudeki is 9 years old, but it is a classic, Hitman 3: Contracts was released here 9 years and 11 months after its original release, Full Spectrum Warrior was released here 9 years and 8 months after its original released.
No DLCs on the spreadsheet, and neither Omerta: Gold Edition nor Dracula 5 counted as releases, nor the splitting of Edna and Harvey.

Do point out if I missed any releases, hadn't paid that much attention to the spreadsheet last month.

P.S. In the first 4 months of 2011 (pre-indie games) we had a total of 27 games, of which 17 were 10+ years old, and 14 were pre-2K ones. So if GOG releases today a pre-2K game, they will have released the same number of oldies as they did back in 2011, with an additional 41 released games. If today's release is not 10+ years old, they'd have released one less oldie than they did in the same time period back in "pre-indie" times.

Never enough of good old stats :-)

On the other hand, I'd prefer more games from around 2003-2010 or so on GOG, AAA-titles if at all possible. Can be newer too, but "a few years old, and older" is fine by me. I'm quite happy with e.g. the STALKER and Sudeki releases. More of that, please.

I guess there are lots of different wishes towards GOG flying around.

As soon as I saw the thread title, I wondered whether you would make an appearance. You didn't disappoint. ;)

They're probably also running out of Good Old Games in general. It's not an infinite collection of games.

if you count it that way, for sure you're absolutely right.

For myself - and I'm a 40 year old collector with a collection of 3000+ original releases in original boxes - the main reason to spend money on GOG has been to make the use of my old classics more comfortable (rather than firing up that old IBM PS/2 AT of my 486DX and mess around with my XMS and EMS memory configurations...

What I would love to see is that some of the classics of my junior years that are still missing in my library somehow find their way to GOG. I'm not talking about the usual games that are discussed in the requests pages (although I would love to see some of the rarer games here, e.g. the complete set of Legend Entertainment Adventures) which have still active rights owners. What I would love to see are games from publishers/right owners who have a lot of their games already on GOG but some others are still missing:

Some examples:

Sierra: all typical Quest Series and some others are on GOG, others, which I consider equally intersting like the Mahunter Series, Conquests of Camelot, Conquests of the Longbow, the Black Cauldron or Codename Iceman are missing

Microprose: Bloodnet and Rex Nebular are released but Return of the Phantom or The Legacy are missing

Westwood - same thing here. Most of their games are online, but others like Blade Runner are missing

SSI - they have a lot of games on GOG, but the entire AD&D Range, other parts of the Panzer General series except part 2 are absent

Origin: All Ultimas and the more known games can be found - the rare gems like Times of Lore, Knights of Lore or Windwalker are missing

Bullfrog - almost the entire games catalogue is there, but where is Powermonger, Flood, Genewars?

just some examples - therefore I wanted to know if this is really a license issue or are there technical reasons that prevent GOG to complete these publisher catalogues?

Yeah, I recently found a deal for the first System Shock, got the thing in the mail, and all I've done is stare at the jewel case and CD because I don't think I've got any hope of getting it to run on my rig. Just like so many of the other classics I've got on CD like the Eye of the Beholders, Dragon Wars, The Bard's Tale I, II, III to name a few. At least Wasteland is here now so I can play that now. The hard copy book with the paragraphs should help too as I don't know if one has to print out the paragraphs now or read them with a reader while playing or if they aren't even needed anymore by some sort of patch.

Senet!

-Featuring toggle-able modern updates such as new paragraph voice over, new music tracks and updated portraits. Play in classic mode to get the original experience.