The Obama administration, via the Eric Holder Justice Department, sued to block an AT&T and T-Mobile merger. In so doing, they offered a great rationale in favor of breaking up the government monopoly on education by saying the merger "would result in tens of millions of consumers all across the country facing higher prices, fewer choices and lower quality products for mobile wireless services." So there is the proof that they know the damage caused by monopolies, but Obama and the left nonetheless is intent on keeping the government education monopoly rolling. This might cause some on the left to experience cognitive dissonance, but then again, that condition presupposes cognition.
Actually, in this regard, I don't really think the left is being stupid. Rather, I think they know full well that the government education monopoly results in "higher prices, fewer choices and lower quality." This is not "for the children." It is for the left to keep as much power as possible. I would have more respect for the left if they were merely stupid, but consigning children to education wastelands while using them to maintain political power is unconscionable.