A sharp competitor is a company that is highly competitive in the market. Sony, Sanyo, and RCA are all examples of companies that fit this description. Sony is a Japanese multinational conglomerate corporation that manufactures consumer electronics, video games, and entertainment products. Sanyo is a Japanese electronics company that produces a wide range of products including home appliances, audio and video equipment, and telecommunications devices. RCA is an American electronics company that produces consumer electronics, television sets, and other audio and video equipment. All three companies are known for their competitive edge in the market and have been successful in providing quality products to consumers.