Apple’s COO Tim Cook in an interview about how Apple chooses what products to bring to the market:
We are the most focused company that I know of or have read of or have any knowledge of. We say no to good ideas every day. We say no to great ideas in order to keep the amount of things we focus on very small in number so that we can put enormous energy behind the ones we do choose. The table each of you are sitting at today, you could probably put every product on it that Apple makes, yet Apple’s revenue last year was $40 billion.