I don't really like this attitude. It strikes me as a built-to-flip style of business. I'm personally not planning to get rich from one app, but rather I want to create a bunch of apps that serve various markets. Hopefully, at some point, I will capture enough market that I can quit my day job. But I don't expect any of my apps to ever be top 50 anything. Rather I'm hoping they're each one of 10 (first page) that come up when you search for a specific task.