Why do oligarchy exist? List five or six oligopolists whose products you own or regularly purchase. What distinguishes oilgopoly from monopolistic competition?

Answer 1

Are you sure you mean "oligarchy?"

This is a form of government, not a company or economic entity.

Answer 2

That's how the question is written in the textbook

Answer 3

Then the textbook is wrong.

The word is "oligopoly," not "oligarchy."

Check this site.

http://www.investopedia.com/terms/o/oligopoly.asp