I was on a train to nantes last year, and heard two local politicians ( from green parties) talking together about environmental issues. As time passed on, i started talking to them, and we ended up talking about new transport systems. Well, one of them started mentionning blablacar, a site he used sometimes, and how it became a marketplace rather than a service company, and became philosophical about it, only to end to the conclusion that : the state should start regulating their activity.
I was dumbfounded. I had to tell him that users would go elsewhere if prices would start to go up too much, and basically explain to him the benefit of a free market.
This is not anecdotical. This is a cultural issue. Politicians are clueless about the basis of a sane economy.