But nor do people pay for a lot of the fashionable consumer products such as Pinterest. If people aren't prepared to pay then they do not have a viable sustain

But nor do people pay for a lot of the fashionable consumer products such as Pinterest. If people aren't prepared to pay then they do not have a viable sustainable business. They can keep taking VC investment and hope to sell to Google or whatever but thats a different thing. I believe that if you solve a real problem that people are having, consumers will be more likely to open their wallets for it. [Angry Birds is an interesting one. It's obviously a profitable franchise but the pricing model of mobile apps makes is such that they can be sold as a very cheap impulse buy. Micro payments perhaps make the model of building for desire rather than problem solving more viable.