In which market structure would you expect to find a single seller dominating the market?

In a monopoly market structure, a single seller dominates the entire market, dictating the price and controlling the supply of a product or service. This situation arises when there are significant barriers to entry preventing other firms from entering the market and competing. Such barriers can include high startup costs, exclusive access to a crucial resource, or legal regulations that prevent other companies from entering the industry.

Because there is only one seller, the monopolist can set prices above the market equilibrium price that would exist in a competitive market, leading to higher profits. In contrast to the other market structures where multiple sellers compete, a monopoly stands out due to its unique position as the sole provider of a good or service, resulting in a market with limited competition.