I find it interesting that the article fails to mention the reason behind the bans. Perhaps they expect us to already know that it's due to problems with driver background checks. (correct me if I'm wrong)

Then again, if the argument is that in a pure libertarian system consumers would drive out bad actors like this, I'm not sure that this line of thinking would hold. The convenience of a cheap ride would seem to be worth the cost of the seemingly small chance that a user might be assaulted if the world worked this way.