At the point that someone tries to block them from being distributed across public infrastructure like the internet.
As long as we're talking about Google's app store, we're limited to talking about Google's terms of service and the relative pressure from the outside groups to force them to either keep/remove the app or suffer bad PR from said groups.
As long as we're talking about Google's app store, we're limited to talking about Google's terms of service and the relative pressure from the outside groups to force them to either keep/remove the app or suffer bad PR from said groups.