For more than 15 years I made a living in the copyright industries. A great frustrated is listening to those who complain that a $10 ebook costs too much, or that a 99 cent song is too expensive, while simultaneously burning $100 on a boozy night out.

And I've marveled at many in tech who say that a musician should comp their recordings for the exposure and make up the difference/loss in other ways, such as selling t-shirts and touring.

It was inevitable that sectors of the tech biz would one day face a similar cultural force and according to techradar it's come in the form of users venting at paying $2 to upgrade an app.

The iTunes App Store is littered with comments like, "it's a great app but $2 is way too expensive." Just as the entertainment industries need to prove their value to consumers, app developers do too.