When I finally did a 2nd (or was it 3rd) run with Portal 1, I did it with Portal RTX. I haven't played Portal 2 since it came out, so I might be overdue for another run.
I ended up buying the PS3 version just because it came with the free Steam key. That way I got two copies for the price of one, and one of them was a physical copy. Steam ended up being down on launch day, so I couldn't claim the key. So my first night with Portal 2 was playing the PS3 version, suffering not only with a controller, but with one of the worst controllers known to mankind. The 2nd day after I got home from work I was able to claim the key, and start my real file on PC. Never ran the PS3 version again, I don't think. It was interesting being able to log into Steam on PS3 though.
I didn't know there was a limited time to claim the free key. I agree that's some lame-@ss bullsh1t. Portal 2 has been on sale on Steam a bajillion times though, for extremely cheap prices a good amount of those times. So it's still been pretty easy and very cheap for people to get their hands on the PC version throughout the years.
Yeah Portal 2 was some good sh1t. Too bad you were unable to finish it. I've only been through the game once, back when it came out, so I've been wondering if it's time for another run.
Portal 1 is only about 3 hours, by the way.