Why monopolies are considered undesirable?

Answer 1

Real monopolies are considered bad, as one company has general dominance over a particular market. This can cause smaller, less established businesses to go out of business, and may lead to fines being given to the monopoly company

Answer 2:

• Some monopolies reduce competition and innovation.
• May not have enough oversight.
• Monopolies may have power to harm the consumer, and may pursue it in pursuit of profits
• May intentionally reduce supply to increase profits.
• May be able to wield undue influence over governments.

Monopolies are not always bad. Sometimes the nature of a business may lead to a monopoly being the most natural state for it.