Wait, this is the Sharing Economy, right? Giant, investment banker-funded Silicon Valley startups aren't in it for generosity's sake?! But their app says cute things like, "oops!" when there's an error.  How is this possible?!?!
All kidding aside, I knew this whole thing was bullshit when it saved me about 2 dollars to NOT use a unionized cab company to get from Sellwood to PDX.