When evaluating monopolies demonstrate critical thinking by acknowledging the positives as well as the negatives. For example, Amazon has partly become a monopoly by being very good at what they do & consumers benefit from lower prices & greater choice. However, this power means that they can also abuse the suppliers on their platform.
When evaluating natural monopolies, consider the government failure that may occur with regard to regulation & the imposition of maximum prices. There is a lot of disagreement about the level of profits that natural monopolies should be allowed to make. It is a normative issue.