every day , they make these games so they can release it for you
they only need to go back in time and release it so they can release them as pre 2010 games now

Sadly not many games being made before 2010 anymore.

There were 3 classic games just released yesterday...

There have been many classic releases recently.

Just today, Discoveries of the Deep, Sands of Fire, and Search for the Titanic (1993, 1990, 1989 respectively).

The Siege of Avalon anthology is coming soon.

On March 28 there was a release of 9 classic games such as Psi 5 Trading Company.
This discussion thread on filter workarounds contains a way to search for games originally released in particular years.

They are trying. It largely depends on the publishers, if they are willing to sell their game on GOG( being stubborn, having own distribution platform, licencing, technical problems, etc.). And as StingingVelvet said, their aren't that many more games to be added from that era :/. Not much GOG or anybody can do about it. Cheers

EDIT: I wrongly understood OP's question. I thought he was talking about games made in 2010, not the whole games history before that year ;). You can disregard this post.

Best GOG B-Day present ever, Alter.
I like (big) lists, I cannot lie.

https://www.gog.com/games?release=p2000,2000_2004,2005_2009


2020
...
‖ Oct02 • NEWS: Release: Silent Hill 4: The Room • article
‖ Oct16 • NEWS: Release: Ankh 2: Heart of Osiris and Ankh 3: Battle of the Gods • article
‖ Oct16 • NEWS: Release: Super Huey III • article
‖ Oct19 • NEWS: Release: Emperor of the Fading Suns • article
‖ Nov12 • NEWS: Release: The Dark Heart of Uukrul • article
‖ Nov19 • NEWS: Throwback Thursday with new games from Throwback Entertainment • article
‖ Nov25 • NEWS: Release: Drakensang • article
‖ Dec01 • NEWS: Release: Knights of the Chalice • article
‖ Dec03 • NEWS: Release: Diggles: The Myth of Fenris • article
‖ Dec04 • NEWS: Three classic games from Ziggurat Interactive join GOG.COM • article
‖ Dec07 • NEWS: Three Telltale Games arrive on GOG.COM! • article
‖ Dec18 • NEWS: Check out these 4 classic games that make a comeback on GOG.COM! • article
‖ Dec21 • NEWS: The classic fantasy shooter series Heretic joins the ranks of GOG.COM • article

2021
‖ Jan18 • NEWS: Play Moonstone: A Hard Days Knight and read our interview with the game's creator • article
‖ Jan29 • NEWS: Traverse the roads with the 18 Wheels of Steel series • article
‖ Jan29 • NEWS: Check out these 4 classic titles making a grand comeback! • article
‖ Feb10 • NEWS: Release: Commander Keen Complete Pack • article
‖ Feb12 • NEWS: Explore 3 classic titles from MicroProse that return to GOG.COM • article
‖ Mar01 • NEWS: Release: M.U.L.E. • article
‖ Mar02 • NEWS: 8 arcade classics are here to bring you loads of retro fun! • article
‖ Mar16 • NEWS: Release: Stubbs the Zombie in Rebel Without a Pulse • article
‖ Mar19 • NEWS: 9 Classic Games that are sure to scratch your retro itch • article
‖ Apr02 • NEWS: 3 classics from Ziggurat arrive on GOG.COM • article

We get a good number of classic games still, like the really old ones we just got yesterday.

What I wonder when this question is brought up: are people asking specifically about popular old games or any old games? Many of the remaining popular old games, ones high up on the Community Wishlist, have very messy legal issues or uninterested publishers, which is why releases of those are so rare.

Impressive. Do you have a ready to go list that you wheel out every 5-10 days when another of these threads rolls around?

I'd say that at least once a month, probably a bit more. depending if you count it as packs of individual titles. Anyway the list above is very informative.

I pick relevant News from here.