Since ESPN was created in the United States, it would most likely be more popular with the citizens of the United States because the founder would use his knowledge of what sports appeal to the first audience that would view this channel. In this case, it is American citizens in the U.S.
When a company begins, usually it appeals to the people in the area locally first. Then it would go global. Once it goes global, then more and more people outside of the United States may enjoy watching ESPN, but not a lot of citizens from other countries may not have access to ESPN on their televisions. Therefore, it would be more popular in the country it originated in.