:facepalm:
A ) you can’t compare the development times of a game that was created more than ten years ago with one that’s being developed right now.
texture resolution, physics, AI interactions; everything is far more complex and detailed than it was back in the 90’s, and as such, takes a lot longer to make.
B ) the black mesa devs are doing this mod in their SPARE TIME; the hl devs were NOT, it was their job, for fuck’s sake.