Maybe not a word, but a term: "Social scalability", coined by Nick Szabo.
I think it most succinctly and precisely captures Bitcoin at the most fundamental level. As a concept, social scalability goes beyond even "money", since money is just another tool to help us win and get better at cooperation games.
Inspired by his seminal essay, I also wrote an article on a related concept, the Dunbar's number: https://hugonguyen.medium.com/bitcoin-and-the-dunbar-limit-5c820c4e5632