OldFatGuy: And again, if GOG is still selling the games, then that means they should still be able to get them to work on modern systems. If they can't... then they should stop selling them. Either GOG can get it to work on modern systems, or it can't. And if it can for new purchasers, then it can for old purchasers.
This is just bullshit. Get the games you sell to run on modern systems... or stop selling them.
It's an awkward compromise. It is possible to get the Gothic's to work, but often requires some effort to tweak. Why can't GOG do everything for every game? Because sometimes different fixes can be required (eg, different OS versions, different GPU's especially mobile (eg, Intel Xe / Arc
lacks native hardware DX9 rendering and has to emulate DX7-9 via a DX12 wrapper inside the Intel Driver) and may need different settings / different wrappers vs nVidia / AMD GPU. Pre-packaging community patches can also be awkward when many of them go far beyond compatibility tweaks or may have competing patches. Eg, for Diablo you've got
DevilutionX (true to original, mostly compatibility tweaks) vs
Belzebub (changes a lot more including adding new classes, skills, spells, etc). For Thief HD texture packs, you've got the HD MOD (a "darker" art style) vs ERGSAN (original art style AI upscaled).
There is no "right" answer in trying to pick one (of several) possibly competing patches then force that onto everyone by pre-packaging it in the name of "convenience", it's always best to give users the choice. Having a "clean base game" also makes it easier to troubleshoot patches (as in when trying to help someone mod an already pre-modded pre-packaged install and they get in such a muddle it's best to say
"OK, stop. Let's start from the beginning. Wipe everything. Clean install the base game, now let's take it from there...". The downside is, people may have to put in the effort to install it themselves. Realistically though, if you play enough old games (or mod Elder Scrolls titles) you'll end up needing to learn to do that for various titles sooner or later but it is a useful skill-set to learn regardless of the 'convenience' of wanting GOG to do everything.