Ironically, I am sure that Valve... if they really wanted to, could have certainly done their own "real" HD re-make of Half-Life 1 during all the time that's been burning out since the release of Episode Two to this day, seriously. In the meantime they went on their Counter-Strike and zombie apocalypse spree. I know Valve doesn't "have to" do anything about Black Mesa but... man if anything they should allow it on Steam and then send an official "Thanks" to those guys, and perhaps invite them at the Valve studios for a tour and eating some pizza with Valve staff or something. Anyway, they've done a great job. I've tried it and I am impressed, it brings very good memories.