As long as you don't have control on which files are stored on the machine, they'll need to sue the IPFS protocol inventors, good luck with that.
I the meanwhile, let's just have fun and leave these dark thought behind ^_^
Besides, the IPFS operator/client is always in full control by design. IPFS is not a darknet. You may be confusing it with Hyphanet or Freenet.
Eh, Nintendo doesn't need to be on the right in order to sue.
And has a long history of forcing defendants into awful settlements, through sheer power of being bigger than the target.
Refer to the story of the Yuzu and Citra emulators, for a recent example.