And this reveals the real reason Nintendo came after Switch emulators - to buy some extra time before Switch 2 gets properly emulated.
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There are legal issues around how to legally obtain emulatable copies of the games you own, but emulation is absolutely legal.
(This is not a commentary on whether the emulators in question were careful in every other way.)
Still, Nintendo's motive is to defend their IP.
Even if the lawsuits go nowhere, it still works for them.
See, https://www.pcgamer.com/gaming-industry/switch-emulator-ryuj....
If Nintendo's IP wasn't involved they wouldn't give a rat ass about the emulation scene.