This logic would make sense in a competitive market. However, Google Play leans on monopolistic control of the platform. Not only that, but Google does use its

This logic would make sense in a competitive market. However, Google Play leans on monopolistic control of the platform. Not only that, but Google does use its monopoly to strong-arm manufacturers not to bundle competing services to the Play store. Its essentially a tax on anyone doing commerce on the most installed computing platform on the planet, used by two billion people (not including China).