Or, they will all pre-emptively adopt stronger policies to avoid freeloading. OSS apps don't pay for bandwidth used in downloads, and Google is the one benefiting most from all the free apps on their platform. So if _they_ aren't comfortable with the situation, I can't see a breakup solving that.
Google will never care about the quality of an app store (for devs and for users) as much as a company with majority of revenue coming from folks using their app store. It's the fundamental problem with a monopoly business and breaking off the Google store from being the exclusive way to get apps on the Android platform will solve it because companies optimize profit.
