I saw a great presentation once that put a slide up with several well-known companies - Google, Facebook, Yahoo, etc. The presenter asked what business they&#x27;re all in. The answer is advertising. Then he put up a slide with over 200 companies. What business are they all in? Advertising.<p>Then he pointed out that advertising is only 2% of the GDP, and internet ads aren&#x27;t even a majority of that.<p>The point was to consider enterprise and medtech for startups instead, places where real businesses will pay real money for your products, rather than going out to find a million eyeballs and trying to sell them.