Threatening to file a civil suit is not extortion. If it were, it would be pretty much impossible to ever send a cease-and-desist letter.
You’ll note that this kind of unbalanced system is specifically mentioned early in the article:
> In many states, retailers do not have to return the money they collect if the cases are ultimately dismissed or the people are cleared. A Walmart executive, in a court deposition, acknowledged that the company did not follow up to check on whether people it sought money from had been convicted of shoplifting.
If Walmart has to pay costs every time they lost they’d be a LOT more discriminating about when to charge people.
https://en.wikipedia.org/wiki/Strategic_lawsuit_against_publ...