Change is always painful, even when everyone benefits from it.  We usually do our best to ignore slow trends, keeping our comfortable habits and pretending that the world will never surprise us.  I'm sure long after Ford started selling cars there were plenty of horse buggy makers who were sure that the car would always be an expensive frill for the very few. I don't think anything in the last 15 years has revolutionized our lives as much as the internet.  It has transformed how we shop, commun...