Category: Economics

➤ Why do digital platforms and communication goods often show strong network effects?
Digital platforms and communication goods link users and lower coordination costs, so each new participant adds interaction opportunities, content, or transactions. They also draw developers and multi-sided participants. These structural features create positive feedback loops that boost adoption, increase lock-in, and favor winner-take-most market outcomes.

➤ How do you calculate the real cost per use for single-use versus reusable instruments?
Calculate cost per use by adding acquisition cost divided by expected usable cycles, plus per‑use reprocessing, sterilization, maintenance, and disposal fees. Add overheads like storage and staff time. Include estimated costs of infection risk and downtime. Compare that to the firm per-unit price of single-use items to decide which option minimizes cost per case.

➤ When will new firms enter the steel industry after input prices drop?
Existing firms raise output immediately in the short run. If lower input prices persist, firms earn positive economic profits and new competitors enter over the long run. Entry expands industry supply further, pushing the market price down until economic profits approach zero in a perfectly competitive market.