When has that ever happened? The only time someone can control all the media is if the market is highly regulated. Otherwise I can literally go and start up a newsletter pushing free market views and it'll eventually overtake the competition if they persist in being stupid and advancing stupid views.
Free market views aren't better because they have some theoretical purity; they work much better than all the other options. Anyone who approaches the world trying to get the best results will end up with strong free market views. The free market is almost a magic fountain of wealth and prosperity. The people who want to improve the world are hard ones to shut up; they keep talking. And they don't even need to be in contact with each other to figure out market principles - they're matters of observing human behaviour, not learned ideologies.
Free market views aren't better because they have some theoretical purity; they work much better than all the other options. Anyone who approaches the world trying to get the best results will end up with strong free market views. The free market is almost a magic fountain of wealth and prosperity. The people who want to improve the world are hard ones to shut up; they keep talking. And they don't even need to be in contact with each other to figure out market principles - they're matters of observing human behaviour, not learned ideologies.