These days, consumer-to-consumer product trade (C2C-PT) has grown in popularity as a result of technological improvements, with everyone ready to buy and sell things directly. It's unclear how C2C-PT affects the market's maker (dubbed the "firm") and consumers. In general, a company creates and sells a product to market customers. Consumers have a wide range of random product valuations and are strategic in the sense that they maximize utility in the future. C2C-PT may benefit or harm the firm and consumers at times, and the strategic conduct of customers may harm or help the firm. Owners...