Soundwave on 02 May 2017
I don't think it's so much things "learned from Sony", it's just Nintendo had no choice but to change some things.
You can't continue to have poor marketing, you can't keep ignoring the core market, you can't continue to look off marketing during sports events, you need to have a big AAA system mover at launch if you're not going to have third party support, you need to look at modern genre-types (that are popular on PS/XBox sure) like open-world RPGs ala Skyrim and online squad based shooters (hello BotW and Splatoon).
