High trust environments are inherently more efficient and cheaper so the destruction of trust will act like a tax on all activity. But that'll probably make the GDP go up so it will be read as an economic improvement, just like wrestling with health insurance companies.

Even when they are honest about it there's a cost. I keep receiving status emails where the first line says "Generated with AI, be sure to check for accuracy". Apparently, it's more efficient to send an email with unverified information to twenty people and tell them to each individually check it than it is for the sender to just make sure it's accurate before they send it out. Maybe they're just asking their agent to do the check for them though.