It sounds like a really bad idea to have all software "components" be resolved, downloaded, and executed from over the internet. Seems like a supply chain/waterhole attack just waiting to happen.
Not to mention it would seem to sign away the devices ability to act autonomously or offline. Of course, with my views of Google, it seems very like them to design everything to constantly rely on them to even function.
Correct me if I'm wrong on any of this.