Ditto.I know I played a bunch of games during the 90s.
I haven't seen any evidence suggesting to me that was the norm, though.
My personal experience with trying new systems EXPLODED in the 1990s because I was away from home in school. I went from playing 4-5 RPGs (mostly D&D) with my friends back home to learning over 120 while away.
When I returned to my permanent residence & my old friends, the gaming pattern hadn’t changed. Over the next 20 years in that group, the list of systems played (other than D&D) expanded by 2.
I’m pretty certain that group was at the opposite extreme from my group at school, but I don’t have a clue as to where the medium lies.