[GBKS]

And yet app revenues keep increasing every quarter (http://www.asymco.com/2014/02/10/fortune-130/).

First, I'm not sure poor marketing practices can be blamed on the App Store itself. It is up to those companies/sites to decide how to promote themselves. I'm also not sure it is the App Stores responsibility to provide many marketing channels.

Second, websites are free, that's why most people probably expect apps to be free, too. I think people like to pay for experiences. A coffee is an experience. And you get a friendly barista, a nice store with wi-fi, a whole table with extras to mix in, etc. Software in comparison is really abstract. Out bodies tell us they are hungry or sleepy, and pressure us to do something about it. Our bodies do not pressure us to try out a new calendar app.