That matters a lot actually ..... Third parties arent ONE company which is why I said it was like comparing Revenue for Apple Phones to Android Phones. Android OEMS aren't 1 company they don't share sales... but Apple is so you cant consider it lucrative for third parties on a company by company basis because they don't share sales revenue.
https://en.wikipedia.org/wiki/List_of_best-selling_Wii_video_games
Granted this site isn't an extensive list of everything it will give you an example (I don't see EA). You had to go 20+ deep to get a title that wasn't Ubisoft which was one of the few third parties that were succesful on the Wii.
Nintendo 37 Titles = 377.77 million sales (10 million per title average) 60% of the top games sold
Third Party 24 Titles = 38.8 million sales (1.6 million Average) 40% of the top games sold
Third parties as a whole may have sold more on a per unit basis (when you consider all titles not included on the list) but that was spread across several companies. I was simply stating that people buy Nintendo consoles to play Nintendo games , which makes it less of a value proposition for third parties to spend development time to make games that are under the quality of standards they put on other platforms. Third parties decided it was a better value to focus development on where they knew they could sell their titles.