Viewing from Economics’ Angle, PSP (PlayStation Portable) should be Retained. As we all know, PSPs have set the toeholds in video games market. Although PS Vita was born, it needs not to supersede the PSP markets, as PSPs Prices are reasonable and UMDs interfaces are more suitable for users. PSPs may need no online registrations.
Furthermore, viewing from Economics' angle, PSP (PlayStation Portable) should be retained. Please peruse the following Economics theory first:
The Marshall-Lerner Condition (Economics Theory) An improvement in a country's trading terms will make its exports more expensive, relative to its imports, and thus will induce increasing its imports' volume but a decreasing in its exports' volume. Its demand elasticity for exports and imports are sufficiently high (Marshall-Lerner condition). Therefore, the statement “an improvement in a country's trading terms will improve its trade balance;” is generally false, but is true when demand elasticity sufficiently low.
* Commentary: High Demand Elasticity implies consumers may be free to choose to buy products or may select to forsake those products.
Besides, the prices of food and clothing have been raised these years. People’s expenditures (capital flow) must shift more to food and clothing. People have less private savings in consequences. Durable electronic appliances are of low demand products. As a result, merchandising durable electronic appliances may always have a deficit record this time.
PS Vita, for the time being, is of higher quality. Purchasing PS Vita in addition to purchasing PS Vita's equipment, the price is a bit too handsome. In accordance with Marshall-Lerner Condition, consumers may search any other products to replace PS Vita. Trading strategies from China has successfully triumph over considerable countries since Chinese products are cheap and good for foreign customers. It is time SONY determined if SONY retain PSPs' production lines besides PS Vita or do not. Side by side, should there be two or more Portable SONY game machines allowing consumers to pick, users are lucky.