It's a standard way of finding business ideas. look for where there is a need. hackernews has these every week, I actually think they provide interest, even if the intention is business rather than discussion.
By contrast, every disgusting corrupt snake who has ruined the world for everyone else has started out with the goal of making X dollars in Y timeframe. So while I'm not saying they're all going to be evil, all of the evil ones share that trait.