The comment you were replying to said that the reason for high prices is oligopoly and you've replied that the way to prevent oligopoly is to be against communism, so logically it follows that fighting communism would help lower the prices, no?
But if you want to follow that train of thought with that faulty premise, then sure yes we must stop communism to lower prices because the OP says that oligopoly is solely responsible for price increases, so it follows that further restriction on market participants further increases prices. I don't agree with that premise, but if that's your view and the OPs view then it would be logically consistent for you to also advocate stamping out communism to lower prices.