P a b l o I s a n a r t I st who has a very unique style of painting.It is so unique that no one can

t h e Herald Sun Newspaper, a study by the Centre for International Finance found that Australian monopolies perform better compared to monopolies elsewhere. Surprisingly, the research found that companies with monopoly power in Australia were three times more likely to invest in research and development than companies in competitive markets. Which of the following are valid explanations for the existence of monopolies?