Why do companies merge?

Answer: Economies of scale reduce costs

CEOs become friends and combine — Wrong. Mergers are business decisions driven by economics, not personal relationships. Companies merge to reduce costs (economies of scale), eliminate competition, access new markets, acquire technology/talent, or increase market power.

Economies of scale reduce costs ✓ — Correct! Mergers create economies of scale—larger operations reduce per-unit costs. Combining two companies eliminates duplicate corporate functions (HR, accounting, IT), increases purchasing power with suppliers, spreads R&D costs over more products, and improves efficiency. Lower costs mean higher profits or competitive pricing.

Smaller companies always fail — Wrong. Many small companies thrive independently. Mergers happen when companies believe combining creates more value than operating separately—through cost savings, market power, synergies, or eliminating competition. Size alone doesn't determine success.