> Money works purely on belief. If we all suddenly disbelieved in the dollar, the value would be zero.

Is this true? Yes.

Are you wildly underselling what "disbelieving in the dollar" means in practice? Also yes.

I believe in the dollar because the United States has the worlds largest nuclear arsenal, spends nearly a trillion dollars on its military every year – and that's only what it puts on the books – and has been proven to have an itchy fucking trigger finger.

That trust isn't going anywhere without massive global conflict.

> suddenly disbelieved in the dollar

you can disbelieve in the dollar. But you can't disbelieve in the Secret Service/US military showing up and kicking your ass

Also democracy. What if Bitcoin went up to $100M/coin? What is the likelihood that both Trump and Biden are going to be like "Well the BTC people were right and now they can buy all the companies and real estate. The rest of you americans will have to just have fun being poor, there is no way we will tax BTC wealth"

> Elon Musk's net worth is $28B. His faith in a crypocurrency as a value store counts for a lot.

Not only that, but he has pretty dominating role in various companies whose market caps are in hundreds of billions at least.