Final answer:
Small 'Mom and Pop firms' like inner city grocery stores exist despite not earning economic profits due to unique products, personalized service, and community connections.
Step-by-step explanation:
Small 'Mom and Pop firms,' like inner city grocery stores, sometimes exist even though they do not earn economic profits due to various reasons:
- Provide unique products or services that are not easily replicated by larger competitors.
- Have a loyal customer base due to personalized customer service and community connection.
- May be subsidized or operated more as a labor of love rather than a profit-driven venture.