Sega really only had about 3 good years in the console market total, lol.
1992, 1993 (Nintendo made a dumb error in censoring Mortal Kombat 1 which then gave Sega an edge), and 1994 primarily.
By 1995, the wheels were already clearly falling off the wagon, even by '94, Nintendo had reversed course and allowed blood in Mortal Kombat 2 + Donkey Kong Country came out and blew Sonic out of the water.
So returning to crap sales was basically just going back to normal for Sega.
The Saturn also has to be one of the funniest launches ever, I remember just walking into a Blockbuster Video one day in the spring and randomly the Saturn was available to rent/buy, lol, and I kept track of all gaming news even way back then with gaming mags, and even I was a bit stunned that they literally just surprise launched a console and this was just a few months after the 32X had came out.
Imagine just walking into a store today and Switch 2 is on the storeshelves and Nintendo just bothered to tell no one.