たとえヒット商品を出したとしても、その商品をライバルとして、すぐ次の商品を考えていかねばならない。（商品開発）（松下幸之助の言葉から）
Even if you have created a hit-seller, you should develop another product, with that hit product considered to be a rival.
(development of new products)
Even if you have created a hit-seller, you should develop another product, with that hit product considered to be a rival.
(development of new products)
