I thought the same thing. The app store page shouldn't be the be-all and the end-all for discovery. Instead, it should be the last step in the marketing process. A promotional website, along with using mailing lists and social media as funnels, would go a long way.

Web apps don't hope that people stumble across them because there happens to be a centralized directory. The same active promotion used for web apps should take place for mobile apps.