You only have a free market without coercion as long as all participants act in good faith. Otherwise you either have to let bad actors get away with whatever they like, in which case you no longer have a market, or else someone has to coerce them into fulfilling their obligations.
> You only have a free market without coercion as long as all participants act in good faith.
No, you have a free market without coercion as long as there is no coercion. If some are acting in bad faith or badly, that's more power to the competition.