The only other alternative is something like having some objective event trigger a legal requirement to have the nanny version. For example, a driving-while-texting ticket could trigger a legal requirement to have the nanny version of a phone that won't text while you're in a car.
The problem with this is, who gets to decide which objective event is the trigger? There is no real solution to this problem; it always ends up with a hodgepodge of arbitrary rules that benefit certain people (those with wealth and power), but are a net loss for society as a whole.
Which in practice, at least in the US, means that unelected bureaucrats get to write the detailed regulations that actually decide, based on extremely vague and broad laws written by the legislature. Which in turn means that people with wealth and power can manipulate the system to get regulations passed that benefit them but are a net loss to society as a whole.
> If it's not, then either the manufacturer decides
Which isn't any better.
> or it doesn't happen
Which would be my desired outcome. If only.
you make it sound as though this not desirable. To seem it seems likely that career professionals have higher chances of being effective and unbiased than elected officials whose campaigns need to be funded and poses no other qualification/ experience than being adult citizen .
This sounds nice in theory. In practice the unelected bureaucrats will not be "career professionals" with the proper professional ethics and willingness to be unbiased. Look up "regulatory capture".