While Lindy's post is rather large and... cluttered I'll euphemistically say, I do take one umbrage with his bringing up of "performance gaps" as some sort of indicator of third party support or lack thereof.
Twice in gaming history there have been rather large performance gaps.
Recently the DS and PSP exhibit large amounts of gaps in performance. The DS is about as powerful as the N64 (on the higher side) and the PSP can actually look better than the PS2 at times. The Third parties are largely in favor of the DS.
More lately, the Ps1 and N64 exhbited a large power gap, with the N64 having great graphical chops in the forms of Goldeneye, Perfect Dark, Rogue Squadron, Mario 64, Jet Force Gemini, and Donkey Kong 64. These games made even the highest budget PS1 games look like pixellated garbage wrought from Satan's Anus. Third parties favored the PS1, with a landmark announcement being FFVII announced exclusively for it. If this is all sounding familiar, it should because the one thing the "performance gap" consoles had in common was a gigantic userbase. This overrode any notions of demographics and what game belongs where under what style and yakkity yak yak.
And for the record "mass market" is a bad label to throw around, mainly because third parties would be apeshit crazy not to want all of their games to be "mass market." Do you think Namco would throw a fit if Tales of Whatever sold 13 million copies? Would that say "Dammit! I clearly aimed this game to sell 300,000 copies to the Lebanese immigrant demographic! What went WRONG?!"