lets say Americans give up their gun rights. Then the government decides it wants to use unconstitutional force on us. How would we defend ourselves without guns?
Distributed crypto-currency. One of the big draws of Bitcoin for me years ago was my sense of hopelessness about the utility of guns as being useful under a situation where it was appropriate to 'bare arms' as envisioned by the authors of the 2nd amendment. 'We the people' are increasingly dis-advantaged in such a contest as technology moves exponentially forward.
It occurs to me that the main thing the proverbial 'powers that be' have is more money. All of the rest of their power and influence derives from that, and this asymmetry is the basis for what amounts to a form slavery under which more and more citizens live even here in the 'land of the free.' Wresting monopoly control of nation's (or world's) monetary system from TPTB is a far more powerful weapon than civilian firearms. The latter certainly has it's place both tactically and strategically however. And they are an indispensable tool for other more mundane things as well.
Secondly, you'd broaden "arms" to include crypto?
Interesting idea. It is a day of robbers and thieves operating over the internet. Yes, we can protect our goods and gold from them using crypto, just like yesterday we would do it with a firearm, and before that, with a sword.