Choose two (2) barriers to entry for a single-price monopolist, give an example of each, and explain how they serve as a barrier to entry for other firms.

The main reason for the monopoly firm enjoys a single seller in the market is due to the entry of new firm prohibited due to following reasons

Technological progress firm enjoys economies of scale due to technological progress it helps them produce larger output with minimum cost and enhance the market share of the firm it impossible to break this barrier to another firm. Example PepsiCo

Heavy investment example Telecommunication industry requires huge investment in the entry of the new firm is not possible unless a huge investment in this business. Hence existing firm enjoys monopoly power

Thus these are some main factors responsible for the monopoly power due to the absence of the barrier of another firm.