I won't say they were desperate though. a platform holder like Nintendo can't show weakness no matter how bad its situation is or was. I strongly remember an interview with Reggie last year where he interrupted the other side to make a distinction between Nintendo and other publishers saying they are "the platform holder", and others are "publishers". unfortunately I can't recall exactly which interview it was. iactually expected them to be much more aggressive than they were, but they wanted to prove to all they can still succeed on their own, and they are not dependent on others for success.
what they did is, they played their cards very, very smartly. for example, they choose NIS as partner, NIS has always been known as a strong partner for Playstation. they gave NIS a slot early in Switch's life cycle and made them a favor. the game didn't really have any competition, and sold more than the original release if I'm not mistaken. because of this smart move not only they won over NIS as a new partner for them, but they also indirectly convinced a lot of other developers that worked exclusively on Playstation before to also release games on Switch. Disgaea 5 was a very important strategic release for Switch.
Nintendo is still a company that like to make favors to others, they did the same with Bethesda and gave them November slot all for themselves without having CoD or other games competing with Doom, they made a favor to Bethesda too.
I think they didn't exactly change how they operate, but they expanded their operations, they are accepting all kind of software now, and they are more supportive for smaller companies. but, they are still selective and they still depend on key releases and certain strategies different to how Sony seems to operate where their goal is to have everything on their platform no matter how big or small it is.