The question asks to identify the economist who originated the concept of 'Barriers to Entry' for firms.

Barriers to Entry Concept Originator

The concept of 'Barriers to Entry' was primarily developed by the economist J.S. Bain. His work significantly contributed to the field of Industrial Organization.

Understanding Barriers to Entry

Barriers to entry refer to obstacles that make it difficult for new firms to enter a market or industry. These barriers can protect existing firms from competition and influence market structure and profitability.

• Examples include high startup costs, patents, economies of scale, government regulations, and brand loyalty.
• Bain's research focused on how these barriers affect market conduct and performance.

Conclusion

Based on established economic literature, J.S. Bain is credited with developing the theoretical framework for analyzing barriers to entry.