From the technical side you are right but Uber and Airbnb don´t have to fight against the Mafia. The fiat money is owned by a criminal cabal called central banks. They started in 1694 in stealing the right to print money in England. Nowadays they control most parts of the world except Iran and some other countries. So better watch some movies from Francis Ford Coppola and then rethink your optimism. There is a long way to fight but indeed the cryptos will win in the end.