The problem you described is the wrong problem to solve. Not all parents want to hand over parental decision making to the corporation or the state. And even if you do, there's a better way to delegate that without building the instruments for top-down authoritarian governance. Someone else made a well thought out comment about this on one of the other replies, if you want to read it: https://news.ycombinator.com/item?id=49262748
> If you buy an Android device, you can already do everything you proposed
That's just blatantly false. Most Android devices are incredibly locked down nowadays, they're approaching iPhone-level. There was a brief period in Android's infancy where we were close, but the market wasn't allowed to develop before they started adding anti-competitive barriers at every layer of the stack.
If you want to understand the full scale and scope of the problems we're facing, see this: https://news.ycombinator.com/item?id=49118578