the government prevents sale of certain hardware that is impossible for them to decode
Hmmmm.
Off hand I would say harfly likely as many folks like to build their own.
Nevertheless, "THEY" would have to get to Microsoft, IBM, motherboard makers, Processor makers, and many other makers of Hard drives and memory etc.
It could happen! Stranger things have happened!
Now where did I put my aluminum foil hat with the silver propellers?
Fred