When it comes to why the Ponko model was discontinued and replaced with cloud computing ones, and there are rogue androids on the run... i feel like it's kind of like how in Isaac Asimov's "The Bicentennial Man".
Since the main character was able to develop a personality, indivuality and the capability of being far more than a machine, that robots like him were increasingly made automatons managed by a central hub with no decision power of their own.
I want Ponko to become a roamer that travels through the world and finds it's own path.