You're a PM at Trader Joe's. Sales are declining in cities where Instacart and Blue Apron are active. What would you do?

Focus on identifying the key metrics that indicate the impact of Instacart and Blue Apron on Trader Joe's sales. Analyze customer behavior and preferences in these cities, considering factors like delivery convenience, product availability, and pricing. Propose specific metrics to track, such as customer acquisition costs, retention rates, and sales per square foot, to understand the decline better. Discuss potential strategies to counteract the competition, such as enhancing the in-store experience, exploring partnerships, or improving online offerings. Be prepared to justify your recommendations with data-driven insights and a clear action plan.