Perhaps we are speaking of costs on different scales. Uber is valued at 18 Billion. Millions of dollars per city sounds like a low barrier of entry to me. If

Perhaps we are speaking of costs on different scales. Uber is valued at 18 Billion. Millions of dollars per city sounds like a low barrier of entry to me. If almost any small start-up can afford to compete with Uber in one city and a well funded one could compete in dozens, yeah I call that a low barrier to entry.