It's because the "killer app" of phones is that they are a phone, aka a remote communications tool that relies on a subscription payment to access someone else's infrastructure. People don't care that phones are not general purpose platforms, because the point of having a phone is to communicate with others, which currently requires paying for that privilege.
If you didn't have to pay for access to a network, and the phone still worked as a phone, then you might see a change.
