Right, shoplifting doesn't exist. Movie theaters run around profitably by getting people to pay whatever they want. They even let them bring their own food. And banks give you a mortgage just because you look like such a trustworthy dude.

How does crypto solve shoplifting?

Banks do credit worthiness checks as part of business.

Movie theaters actually do keep a banned list and enforce it.

My comment was just meant to show the absurd of "not making business if you don't trust the customer"

But that is literally what your examples are doing! Either not doing business because of lost trust or establishing trust before giving money.

No. What I am saying is that for the majority of cases, there is no "trust" involved. There is a protocol that ensures that the exchange occurs properly, regardless of any trust relationship between customer and seller.

So people with low social capital should do what, starve?

Grocery stores are pretty low trust environments.

If you literally are getting banned from grocery stores and starving the answer is probably "the prison warden has a legal duty to feed you".

How are you supposed to know which customers are trustworty and which aren't?

Last time I got a mortgage I had to turn over financial history and have credit checks run. I have definitely had to pass background checks as a customer before.

Your landlord asks you to post a security deposit.

We literally have an entire credit worthiness sector.

You can also invert this and take trust as a default and only ban misbehaving customers.