How do the key Barriers you’ve identified in each of these questions relate to Economies of Scale and Brand Loyalty?

The airline industry is an example of an industry with many Barriers to Entry. Identify/explain some of these key/major Barriers for the airline industry (from the standpoint of the aircraft manufacturers, and/or the airline carriers, etc.)….think about it and be creative/thorough in your thoughts…don’t just give simply the first thing that comes to mind or only the same thing that everyone else does! What industries typically have few Barriers to Entry? If you are currently in (or have previously been in) business, are there few or many Barriers to Entry into your industry? (Give us a few examples of your “real-world” business/industry in this regard. On the other hand, if you don’t have actual business experience yet, then use the University as your “real-world business” and explain your answer and give examples in that light.) How do the key Barriers you’ve identified in each of these questions relate to Economies of Scale and Brand Loyalty?