>>95975803 (OP)In the 70s it was only really D&D
In the 80s you finally started to get truly different RPGs but they could never pull D&D numbers
In the 90s D&D was still ruling the roost but a few systems were starting to shake things up just a bit (mostly Vampire the Masquerade and Call of Cthulhu)
In the 00s D&D truly, 100% cemented it's grasp on the TTRPG community. Even when 4e was only very very very briefly overtaken by Pathfinder (and due to WotC cutting all support for it) D&D still was the elephant in the room
It's just always been a D&D world, anon, but there have always been plenty of systems out there to try out, the only difficulty being if you ever hear of them and/or getting your group to play them
For all the hate online play gets, it's the only way I feel most systems even get played anymore. Like, I live in a pretty decent sized city and 90% of the games are D&D, then it's Pathfinder, then it's Vampire the Masquerade LARP, and only maybe 1% is any other system. Online, though, I get to play Pendragon, Battle Century G, Star Trek Adventures, The One Ring, Call of Cthulhu, Prowlers & Paragons, and more