I guess we're not done with this then.
If they have that policy in place, still no one has complained. That's my point. It's clearly not a problem for them. Even the 3rd parties that released games on N64, still complained about Nintendo's policies. They supported the console, albeit poorly, yet still voiced their displeasure. This has happened on many systems, both past and present, market leader or not.
Of course, cards costs more. I never said that they didn't. I said that the price discrepancy was shrinking which you also acknowledged. I'm not disputing that 3rd parties may prefer discs because discs are cheaper (they probably do). Rather, employing cards is not necessarily a dealbreaker. The bottomline is if 3rd parties feel they can make money on Cafe, they'll support it, regardless of storage format). Simple as that. That said, if 3rd parties told Nintendo, "Blu Ray or GTFO" (perhaps even citing cost as a reason) and Nintendo went with cards anyway, I would absolutely think that was utterly stupid. In that instance, Nintendo would have just relinquished support by being boneheaded. I just can't imagine it going down that way. Nintendo needs to build them a system worth supporting, part of that is ensuring that it can be a port machine, at least initially. As long as Nintendo doesn't do anything silly, they should be fine.