> World Bank estimates 31 percent of people globally do not have a bank account. Decentralisation helps these people.
Banking helps these people. Remember a fully-realized BTC transaction fee (pricing in electricity and mining hardware) is right around $250 each. That's a non-trivial amount of the GDP per capita of a lot of these countries you're alluding to.
Poor folks are also the most vulnerable to the massive volatilities of this so-called currency.
Real, centralized solutions help these people. Solutions like M-Pesa [1]. And Postal Banking, which a hundred years of legacy solving exactly these problems. [2]
> There are financial tools that only people with net worths of over $100 million have access to, such as market making, arbitrage, liquidations, insurance lending etc. Crypto solves this.
It certainly does not haha. It makes them less efficient, which is why not a single crypto-powered business in the last 14 years is competitive with any centralized solutions except in the areas of regulatory arbitrage or by throwing risk models out the window.
> If centralised finance had the potential to be more efficient, there should have been more innovation decades ago. Centralised finance needs to catch up.
It's obviously more efficient, and pretending otherwise doesn't change that.
[1] https://en.wikipedia.org/wiki/M-Pesa
[2] https://en.wikipedia.org/wiki/Postal_savings_system