I have learned the hard way, as father to three small boys, that sharing causes conflict. Ask humans to play with the same toy at the same time, and it won’t take long for a fight to break out. The smart move is to find duplicates of that toy or, if that’s impossible, to urge interested parties to “take turns.”
That’s why I’m afraid the much-celebrated “sharing economy”—the catch-all name for “peer-to-peer” firms that connect people for the purposes of distributing, sharing, and reusing goods and services—is likely to produce more fights than profits. States could be embroiled for years in political, legal, commercial and environmental battles related to sharing.
Companies such as the ride-sharing services Lyft and Uber and the apartment-sharing service Airbnb are success stories; Airbnb is already worth more than the Hyatt or Wyndham hotel chains. In the blocks near my Santa Monica, Calif., office are dozens…