In hindsight, was it always smart for Nintendo to never prioritize or pursue 3rd party support?

[Hardstuck-Platinum]

Wow. The problem is that on this website almost everyone thinks Nintendo is the market leader, so they believe everything they've done has been the right move. In terms of revenue they're third and bottom, so no de-prioritising third party was not the right thing to do. Also, I know people are going to come and say "but the profit margins". Profit margins alone do not determine whether someone is market leader or not because, profit margins are affected by so many factors.