People normally gets their console with a game.
Having a 95% attach rate shows that most owners think it's the only interesting game. Meaning, it highlights that the launch lineup is abysmal outside this game.
Third parties skip Nintendo because their sales on Nintendo devices are abysmal, part because their hardware is too underpowered compared to the other ones, often to the point of now being able to run -at least decently- their recent top AAA games.
No need to be paid to skip Nintendo, they do it because want to run a profitable business.
PS5 was heavily supply constrained due to covid lockdowns related issues combined with component providers being saturated by GPU sales from people farming virtual currencies plus EV tech.
Switch 2 didn't at all, in fact they produced more units than usual before launch to have the biggest launch possible avoiding supply constrains.