but can you really apply this to the already established systems?

Sure, we can, and sure we will.

In my own opinion, both our current monetary and governance systems are severely flawed (note I'm referring to both cryptocurrency and fiat monetary systems, and pretty much every form of government which sovereign nations currently operate under).

I operate under these systems today, but I long for, and work for new, better systems to replace them. I don't know if we'll see significant change in my life time, but I've reached the point in my life where it's the primary goal for all my future work.