The reason this holds true at the moment is because decentralization of money exchange, storage and transactions moves the majority of control of the money supply away from the entities that have it now. This could be overcome, the way I see that happening is through quantum computing, other than that trust networks are going to be mainly for the plebs since they are intangible when attempting to monetize them. The current system is no different from biblical days, where the people in charge of the monetary system held the power, since they could pay people to get rid of those that questioned them. This still holds true today, fiat, or gold or any type of human work derivative.
Without the blockchain or trust network requiring decentralization for its production and use, I am sure that bitcoins would have been adapted very quickly as a form of world wide currency. You go to the gas station and purchase a soda and a donut, while these are terrible food choices, you pay a few dollars for this with your debit card, the gas station, pays a flat fee for each transaction to the major bank responsible for processing that transaction. This is not possible using blockchain protocol since the processing entity is not static. You take that away and huge companies like Visa and their major shareholders are SOL just like the Kings thousands of years ago that were conquered and their treasures stolen. Same thing.....
When it comes right down to it, the process of using trust network to transact and approve others takes away the assertion of individual power due to the amount of money one holds. You make a change where that is no longer the way to control the masses and you change the path of humanity forever. I am of the opinion that trust networks will eventually (just as fiat, and I will get to that) obfuscate the validity of money/currency. Its derivative nature lends itself to corruption and the only reason we continue to make use of it is because no one has given us a widely accepted alternative, because, people know that if you expose the cracks in the system more people will be inclined to leave. The only reason we still use these systems to this day is we continue to allow elitism to to be a main focus of our lives.
Back to fiat obfuscating itself, Finland just launched a test program for 2000 beneficiaries to receive a universal income, if the trial goes well, thy will extend the income to the rest of the nation. Everyone gets it, regardless of if they have a job or not. This will cause a rise in inflation and goods will become more expensive. That should be obvious to even the most simple of minds. This just goes to show that you float money to people, to increase consumption and in the end it results in even more deflation than you started with. Really it's a physics problem, having to do with macro systems, or even if you look at gas laws of dispersion and entropy. When you tweek a large system in little, not well planed ways, you just increase the entropy and do it no good.
That's my rant on that for now