Final answer:
A measure of market power is the inelasticity of a monopolist's demand curve, enabling higher prices. At the monopoly equilibrium, no 'cash on the table' exists as the firm maximizes profit where MB=MC. Monopolies and perfectly competitive firms experience different demand curves, affecting their pricing and sales strategies.
Step-by-step explanation:
The student's question revolves around distinguishing between different market structures and the implications of market power, demand elasticity, and profit maximization. We can dissect this into a few key areas:
- Market Power and Demand Elasticity: The elasticity of the demand curve a firm faces is indeed indicative of market power, particularly in monopoly settings. A more inelastic demand curve strengthens a monopolist's ability to raise prices without significantly reducing quantity sold, thereby enhancing the firm's market power.
- Monopoly Equilibrium: At the profit-maximizing equilibrium, a monopolist produces where marginal benefit (MB) equals marginal cost (MC). Any quantity beyond this point would mean MB < MC, suggesting the firm should not increase production further, as it would diminish profits. Hence, there is no 'cash on the table' at equilibrium.
- Price Discrimination: Through price discrimination, a monopolist may indeed capture some consumer surplus, which is typically left on the table under single-pricing strategies, by charging different prices to different groups or for different units based on their willingness to pay.
A monopoly, by nature, does face the entire market demand curve, and a monopolist can earn negative economic profits in the short run if costs exceed revenues. However, monopolies can maintain supernormal profits in the long run due to barriers to entry. Lastly, a perfectly competitive firm can sell any amount of its product at the market price, unlike a monopolist, which must reduce prices to increase sales due to the downward-sloping demand curve it faces.