Note to Boris Johnson: the opposite of free markets is not communism, it is regulated capitalism where everyone gets a fair chance to compete on a level playing field because a wise government ensures that is the case.
— Richard Murphy (@RichardJMurphy) June 30, 2020
Markets and capitalism are entirely orthogonal to each other. We can have free market not-capitalism as John Lewis proves. The opposite of free markets is unfree markets, something that historically hasn’t worked out well. The basic problem being quis custodiet etc.