That's definitely true in the long term, but while I don't believe that Amazon is necessarily going to abuse the power they ask for just because they have it, h

That's definitely true in the long term, but while I don't believe that Amazon is necessarily going to abuse the power they ask for just because they have it, heavily discounting apps at the developer's expense is a great way to get traction for a new app market that most people haven't heard of. For many of the discounted apps, those that depend on the purchase revenue (vs. ad-based) and that might be fad, or temporarily popular, this could effectively kill them off in the name of helping Amazon.