> All they have to do is destroy the computing and internet freedom we all enjoy today.
That's one of those "good luck" scenarios. Building your own homebrew computer, or your own OS is a hobby for many. If you push the people behind them, and make a market for them, you'll make them popular.
The internet itself is complex, but not so complex that determined actors cannot build their own mesh networks.
And whilst governments are trying to erode encryption everywhere, it won't work in the end. They may be able to take secure encryption out of the hands of civilians, maybe. But they can't take it from the pirates.
And as for the incoming "no one would be that determined" argument, cracking chips to let consoles play pirated games have existed for a long time, and the average person did actually seek them out... And found them everywhere. If you make people build the infrastructure... They will.