Helium was interesting, but they locked it down so you can only use their proprietary hardware for access points, it seems kinda scammy.

IPFS is used by several archive projects like Anna’s archive and libgen.

Meshtastic is a distributed local mesh network for text messaging.

My non lawyer, and probably wrong, advice is to send them a polite reply asking them to refer to the reply given in the case of Arkell v. Pressdram (1971)