I don't think this is very useful, since "yeah but without society there are no companies, money is nothing" doesn't take us very far! But hey.
But the whole point of a corporation is it is a legal entity, you don't need to trust anything for it to work other than other than.. idk the fabric of our society.
I think I read something similar in Sapiens.
This is my takeaway from the book The Case Against Reality.
This reminds me there always exists a path between the current society & a completely different one, and a short path to something completely different is to start from scratch.
A company exists and has valid standing not because people believe in it but because the law says it exists. It is easy to prove beyond reasonable doubt that a company exists (or not). That has nothing to do with whether people believe it is valuable.
How does a company make money? Why does it distribute that money to shareholders? Why can't someone working at the company just keep all the money? Why can't the bank just confiscate it?
The answer at all levels is the the threat of violence. Property rights (eg to the money) are enforced by the threat of state-sanctioend violence, for example the police showing up at your house and throwing you in jail if you don't comply with laws.
So why would the police show up and do that? Why would the courts enforce those laws? It's not just the threat of violence, essentially. It's the collective belief in that system.
Most non currency assets are cash flow generating financial instruments.
If analysts don't believe a company is worth a dime, it can show them wrong by being profitable and paying dividends.
Edit: I think my point is - even if no one else believes in a stock or bond, you can still profit by "being right". The same is not true for currencies.