Not only are those titles niche, they are even more niche going from PS2 which had the 'hardcore' audience to Wii which is predominately casual, people not looking for long term play experiences like Rune Factory and Little King Story. Nor are the HD consoles even a consideration because the niche nature of the games could never recoop HD development costs.
DS or decreasingly PS2 are the only viable platforms I think for those types of games. Or Wiiware/PSN/XBL







