There was a time when "pamphlets" were an edgy new social medium, now its just a certain kind of ad. Same thing happened with radio. And now it has happened to the web also.
Why should this be the last time?
As for threatening the existing powers... I don't see what power they have if all they're guarding is a pile of stuff that nobody wants anymore.
It may be a bit inconvenient, but if you really need a device with radios that you can run arbitrary code on, you can get one for something like $4 and you can use your existing phone to drive it over something generic like http (There are plenty of people on meshtastic doing this).
I don't have the answers re: next steps but I know that its far more difficult to prevent people from communicating in novel ways than it is to come up with novel ways to communicate. I figure we've been playing this cat and mouse game with authority for millennia: they always win eventually and we always find a new way to make that victory irrelevant.
We lost. OK. What's left to do but invent the next battleground? We're hackers, its what we do.