I'm the developer of a relatively popular app (50M+ on the Play Store) and have had very disappointing experiences with the Play Store, but in a rather opposite way from the OP: Once an app reaches a certain level of popularity, you begin to see "knock-off" apps, which are apps with a curiously similar name and icon (and screenshots and description), but which in fact don't do anything except blast the user with full…
But I guess this is "just" the way it is when a namespace becomes too popular.