Hello, I am currently working on Principles of micro economics paper and working on a paragraph researching the book store Barnes & Noble. The heading is "Competitive Pressure with High Barriers to Entry" So far I have written the following but, I feel that I am lacking more information regarding competitive pressures. Can you share your thoughts on providing an improved description of High barrier to entry?

"Barnes & Noble creates artificial barriers to entry through its ability to underprice books and force smaller bookstores out of the market. Its name brand recognition and ability to provide most books further add to the barrier to entry. Amazon, the most successful bookstore ever, also helps Barnes & Nobel build the barrier to entry with their in-store kindle centers. These centers are unique to Barnes & Noble and they are used to sell, fix, and trade in the electronic book readers. All of these services give Barnes & Noble the upper hand, though pressures are still present in the bookselling industry. Barnes & Noble must have these advantages, otherwise they would lose their demand and profits would fall. Local bookstores and libraries can be friendlier and more community-interactive, leading people away from their store."