One of the most important things that crypto/web3 offers to the world is the ability to make financial services a world public utility or even a basic human right - something that is available to all "citizens of the internet".
I think a lot of US citizens don't realize how privileged we are to live in a country where we have access to safe and secure bank accounts, we have access to student loans, we can take out a mortgage, and (generally) we have faith in our government and banks that those products and services are safe and can be trusted. Not everyone is in the same boat.
Crypto allows anyone with internet connection to have access to decentralized financial services. They can create a savings account, they can take out a loan, they can exchange assets, buy insurance, non-US citizens can own assets that reflect the price of US stocks, etc. With crypto/web3, all of this is possible without the need of any government or centralized banks.