When there's an ache, you want to be like aspirin, not vitamins. Aspirin solves a very particular problem someone has, whereas vitamins are a general "nice to have" market.
Human entertainment will have moved on to something new. Then the ultimate challenge for us is, can we figure out what that new form of entertainment is?
When you grow up, as I have, in the shadow of Steve Jobs, Bill Gates and others, success is defined as the total global transformation of a market. To achieve that, you need low prices and an attractive offering. It's about trying to make a positive impact on a big scale.