Which factor most strengthens barriers to entry?

• A. Economies of scale
• B. Low capital requirements
• C. High consumer switching ease
• D. No legal restrictions

Answer: (A)

Barriers to entry are strongest when incumbents can operate at a cost advantage that new entrants can’t easily match. Economies of scale mean that as production increases, the average cost per unit falls. That gives large, established players a clear cost edge: they can offer competitive prices or maintain higher margins while still being profitable. For a new entrant, achieving those large volumes to spread fixed costs and achieve similar per-unit costs is difficult and expensive, creating a strong deterrent to entering the market.

If capital requirements are low, the initial investment burden is small, making entry easier rather than harder. When consumers can switch brands with little friction, incumbents can’t rely on loyalty or high switching costs to defend market share. And if there are no legal restrictions, there are no formal hurdles raising entry costs. All of these would weaken barriers, not strengthen them.

So the factor that most strengthens barriers to entry is economies of scale.