And the hardware. Your phone requires much harder power optimization in order to have a usable battery life. Same for size and heat dissipation.
Also politics related to the radio connection. Public cellular is tied to identity. It is structurally hostile to user-controlled, fully open, deeply optimized devices because the radio stack is certification-heavy, operator-governed, and privacy-hostile.


I’m emphasizing breaking free from identity ties to devices enforced by the hardware/radio. Not adding it to all devices.
It also limits open source competition in the phone market.