Been reading this thread recently and it amazes me how much support SEGA was able to give and to get for the DC in such a short amount of time and with such low sales.
How is it that Nintendo couldn't get a quarter of the support for the Wii which sold ten times better?
The DC was made when Japan were still dominant, and arcades were still around worldwide. Games were still largely a Japanese cultural export.
The Wii was released after a decade of Sony domination, over which time Sony had drifted west as they consolidated the EU/US as something of a monolithic market with only regional sports franchises to differentiate between them. Microsoft's money losing PC-in-a-box strategy was a large market distortion that pushed everything even further west, including Sony.
By that time even most Japanese devs turned their attention west, to get a slice of the heavily subsidised western pie. Even Sega. They all made their bed with Sony's 'inevitable dominance' with the PS3. That didn't really work out, but luckily they could hedge by releasing on the nearly identical 360 as well. The inertia was too great, and the worldwide smash hit Wii just wasn't part of their roadmaps.
We used to have Nintendo and Sega consoles for games with that Japanese feel. PC Engine and PS1 too. Now there's mostly only Nintendo left. Which sucks because as good as Nintendo are, they're the solid/quality but conservative wing of the Japanese tradition, at least their Kyoto teams are. Nintendo are so Kyoto it hurts, I miss the Tokyo craziness of the heyday Capcom/Sega/Konami trifecta.