Given that installing from an APK is as easy as "Here's a download link, click it on your phone, then select the APK from your downloads list", I don't see that

Given that installing from an APK is as easy as "Here's a download link, click it on your phone, then select the APK from your downloads list", I don't see that there will be much of a barrier to entry there. Even without carrier support it won't be hard to get up and running.