Not only do 9 out of 10 apps see fewer than 5,000 downloads, also 9 out of 10 apps are not launched more than once. You can do the math. Right there, you can see that the chances of having an app that's regularly used by more than 5,000 people dropped to 0.01, or 1 in a 100.
There are a number of reasons why this happens. Some users install an app they hear about, but don't like it and may choose to uninstall it right away. If they've liked the app, they may keep it. While this may sound like a win, it's not always the case. Often, users just forget about the app and may not think about launching it again, even if it fulfils a need that they have.
You may have built a fabulous app that helps the user ...