As a professional analrapist, I'd like to suggest, maybe, the fact that Ogre Battle 64 came out four years after console launch.... years after Final Fantasy 7 came out, years after everyone knew Dragon Quest 7 was going to be on the Playstation (also known in these parts as the Phantasy Station X)... maybe the people who liked jRPGs knew the N64 wasn't what they needed to get, in order to play what they wanted to play.Please also remember that "no RPGs" didn't really help the few N64 or GameCube RPGs whatsoever
While today, unless you're completely out of the loop, you would know that the DS and 3DS have been the JRPG machines. The fact that the Switch will have Dragon Quest XI, will be getting Fire Emblem, has Disgaea 5, has Mario + Rabbids, is getting Labyrinth of Refrain, will be getting multiple forms of Pokémon, Shin Megami Tensei 5, and is likely to get the Etrian Odyssey sequels, means a ton to a lot of people. It's this crazy thing called a supported genre. Alongside supported franchises that have been around forever.
Sorry for thinking thoughts and saying them out loud on the internet for people to hear them. Your hate boner for the internet is strong and very impressive.
Also sorry if there are overly sensitive Ogre Battle 64 fans reading this, I'm not trying to diss your jam. I was quite hyped for that game, but was understandably disappointed. Final Fantasy Tactics came out a couple years earlier, and how the hell does anyone compete against that?
(Also also, I like Shining Force quite a bit more than Fire Emblem. Sorry I killed a franchise that I love by stopping SEGA from making more of them. With my mighty analyzing powers.)