@montecook Thinking about, how often has that song actually been used in a movie or similar? I've heard they are pretty selective about use of their songs. Immigrant Song is used a bunch, but can't recall Stairway. (I'm sure it has, I just can't think of any offhand.)
Without either A) listening to a radio station that specifically plays older rock songs or B) had it on my own playlist, I'm not sure I've heard it at all in years. It's definitely not as "in the wild" as it was 20+ years ago.