Warren Buffett's famous lesson is that in a competitive commodity business, any cost savings will get passed on to the consumer and investing in such a business

Warren Buffett's famous lesson is that in a competitive commodity business, any cost savings will get passed on to the consumer and investing in such a business is value destroying in the long term. Monopolization doesn't seem to be happening really in the business Uber is competing in and it seems as likely that any of the half a dozen other players in self driving car business will succeed as Uber.