All the richest people in history have two things in common – they were entrepreneurs and they sold new technologies. The most recent batch of billionaires sold computer technology. Coming up with new ideas and trying to sell them is the riskiest form of entrepreneurship. The entrepreneur does not know if there are enough customers for the new product, if selling the product is profitable or if it will work logistically. Entrepreneurs should start selling products that already exist. The wealthiest entrepreneurs start selling the big products of tomorrow today. Their business grows with the product. Non gasoline powered cars and artificial intelligence are examples of products that will be huge in the future. Smart entrepreneurs start selling these products now.