They wouldn't be forced to offer their services for free. However laws can and do regulate what constitutes a "fair" price for a certain service. In some coun

They wouldn't be forced to offer their services for free. However laws can and do regulate what constitutes a "fair" price for a certain service. In some countries the quasi/effective/total monopoly ISP is forced to rent their last mile phone cables to competitors for a regulated price. A similar thing could happen to Apple and Google with a government agency deciding what they are allowed to charge for their services of providing the app store and the OS. Or they could be forced to allow competing app stores with the same privileges as their own (beyond what is "technically" possible on Android). Either way it looks like they'll loose their iron grip over on customers phones (in some countries at least). That's the price of effectively monopolizing a market and getting very rich doing it.