It's not Nintendo's fault they make software that people want. If what you say is true, then the common knowledge that you need third party support to win is basically right out of the window. The figure of third party software per unit sold is only really important when the competitors are within reach of each other. It's useless when the leader is at least 10 million ahead. Even if the ratio of third party software per hardware is lower, there will be enough actual user to absorb you, and you still end up with more money.