Sovereign Citizens

Sovereign citizens are proponents of the belief that the proper and lawful U.S. Government was long ago secretly replaced by a government formed under Admiralty law (yes, the law of the sea) and is being held prisoner by banks for the benefit of international commerce. Therefore, they believe, they are subject to no authority other than themselves. And the county sheriff. But the sovereign citizen ideology exists largely to sell (literally) a worldview in which its proponents are free from the obligation to obey the government, and do not have to pay taxes. Those selling “legal” resources to sovereigns make money - the sovereigns usually end up in interactions with law enforcement that end badly.What kind of business is this?