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-American Airlines vs. United Airlines
-If American Airlines cuts their prices for a ticket from Boston to Los Angeles, United Airlines will do the same, but might cut their prices even cheaper.

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-GMC, Chrysler, Ford
-They dominate and basically control all of the auto manufacturing in the United States.

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-AirBnB
-They offer their service as a product and their price differences are virtually negligible when compared to other sellers.

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-McDonalds
-They have a lot of competitors, but they have unique items that they sell on their own.