Pretty much. People say it's meant to replace laws and regulations, but if it's successful then it won't.

The US has a large bitcoin strategic reserve. Banks offer bitcoin accounts (in some countries). You can get a loan backed by your bitcoin.

We're not yet at the point where you can get a credit card and 60 year home loan denominated in bitcoin, with the fed writing bonds or even issuing fiat to stabilise rates, but if it was more popular then is there any technical reason we couldn't get there?