I can't understand why this is downvoted. A product that can only be manufactured by one company due to patents does not have a free market. That's not a value

I can't understand why this is downvoted. A product that can only be manufactured by one company due to patents does not have a free market. That's not a value judgement of the patent system, it's just stating the obvious. A patent is a legally enforced monopoly, so of course there will be no competition while the patent is in force.