Choose at least three of the barriers to entry listed below that affect the market in which your business operates (or a company of your choice). Explain how these barriers affect your company. If you prefer, you may find an article that tells a story about barriers to entry having an affect on a certain company or market. Be sure to reference.
Economics of scale - Barriers created by government - Essential input barriers - Brand loyalties
Consumer lock-ins - Network externalities - Sunk cost as a general barrier to entry.