Answer:
Market penetration
Step-by-step explanation:
Market penetration Is when the initial price of a new good or service is set really low. This is usually done to encourage consumers to demand for the product and to reduce the demand for competitors goods or services.
Market penetration is ususally done to gain market share and attract customers to a new product. After a period of time , prices would rise to normal levels.
Nintendo price was lower than Sega's price, it is expected that consumers would demand more of Nintendo and less of Sega games.
I hope my answer helps you.