I think half of your advice is really good, and the other half not as much. We've all seen examples of seemingly useless things becoming very successful. Twitte

I think half of your advice is really good, and the other half not as much. We've all seen examples of seemingly useless things becoming very successful. Twitter, the Yo app, Let's Players, Beats by Dre, and so on. Your secondary advice of focusing on something and putting all your efforts into it is what separates toys from serious businesses. Most of our world runs on socially-fabricated needs and wants, so it's not surprising that things like yet-another-social-network or streaming yourself playing video games could be lucrative.