But they didn't worry about liquidity, about speed of transactions, about the energy/processing costs, about the issues related to a limited monetary base and the deflationary effects of it.
Dial-up modems weren't created to be the final goal of the internet. They were designed to start traveling that road toward fiber, etc. Same with crypto getting the simplest to get started.
TCP/IP was created. It took 12 more years until HTTP. It is okay to get started simply.
Go to any of the dev listservs and you'll see that's basically all anyone has talked about for the past decade. The lack of progress (in implementation, not ideas) in this arena forced the wholesale split of the community.