Old systems are sometimes simpler, and therefore scratch a different itch. Shadowrun is not Cyberpunk, it is Fantasypunk. Because it is older and not many of the current crop of 5e and or pathfinder / savage world players play it, it's not usually on the top of people's lists. Also as a literary genre, it peaked in the 90s, smartphones and tech have gone a different way, so it's sort of an alternate history game now, much as Twilight: 2000 I used to run and play this extensively on open RPG about ten years ago, but yes, other than this post, there's not a lot of notoriety surrounding CP2020. If I wasn't setting up a 5e, and Traveller and playing in a few 5e, I'd run it, but that's how it is. No Time.