All the walls popping up between the rival social empires are getting absurd. Imagine if Ford built a series of freeways where Chevys, Hondas, and other makes were banned – that’s Google . Imagine if the Chevy Malibu drove at half speed on anything other than Chevy-owned freeways – that’s Facebook’s Instagram. Imagine if the California state freeway department Caltrans started building their own cars to discourage people from driving around in the half-speed Chevys – that’s Twitter.