To be fair, 2 points:
(1) Sega was a HELL of a console maker. Many of their systems eclipsed everything that was available at the time, and their marketing was great ("Sega does what Nintendon't"). Where Sega failed was in their leadership. Examples: They focused on the Saturn, a 2D system, at a time when 3D was the next thing. They released the 32x, rather then focusing on the next thing. They didn't encrypt the Dreamcast to ensure that CDR's couldn't be used with it, never dreaming that industrious gamers would rip games over the built-in RS-232 port and then compress the larger GD-ROMs down to fit on a CDR.
(2) The Atari Flashbacks have been overhyped for years... but you have to admit, the Atari Flashback 2 is cool as shit. PCB's manufactured with the idea that tinkerers would mod them with cartridge ports and the like? Genius! Almost like Jeri Ellsworth was involved... or had a fan in the Atari engineering dept.