I doubt that Nintendo would let other companies have their own store fronts as that would mean a lot of lost income for Nintendo. But in terms of support networks like Steamworks for PS3 definitely, so there won't be the restriction on the number and type of patches etc that MS currently impose, it would be interesting to see if Nintendo let EA sell DLC directly tho Valve (and Apple) seems to have blocked it when they tried it on steam games and I doubt Nintendo would be happy ether.
MMOs will also be interesting with the open online approach that Nintendo have been claiming, will Nintendo let publishers sell subscriptions to online games when the publlishers run the servers (at no cost to Nintendo) without giving Nintendo a cut?
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