Imagine a world where businesses, merchants, and everyday people use crypto as the only medium of exchange. Everything will operate autonomously and decentralized without the need for third parties. In this world, governments and big corporations might cease to exist as everything will be guided by both Blockchain technology and AI. People will be able to gain autonomy over their own money, reducing corruption and fraud in every way possible. Negative events in the mainstream world will have little to no effect on the world's economy, as it lives in cyberspace. No one will be able to control people's actions worldwide, as it'll be a "free for all" scenario. Central banks will no longer be relevant, as people will become their own bank via the use of various interconnected Blockchain networks.
While all of this seems to be more of a dream than anything else, there's a possibility it could happen in the future if people lose trust in governments, central banks, and conglomerates alike.
What are your thoughts?

I don't see a gap that bitcoin can break through existing systems. If there is a revolution towards a decentralized system I am excited to know how the rulers of the pyramids took positions in a decentralized system.
But in my opinion the adoption of a full decentralized system is not possible. Because it is not the plan of the maker of the world economic system. They agree with blockchain technology and the use of algorithms but they still want to preserve their wealth. The economy in the future only looks different from conventional to modern but the gap between rich and poor will still be seen.
Cashless life is easy but life without fiat is a utopia, because the rulers of the world economy (the haves) will not be willing to lose their coffers. America will still be a tool for them to hegemony the world. Only if the way it used to be with combat war is now used in more effective ways, namely through currency domination, technology domination, and technology resource dominance.