Are you aware of the Children's Online Privacy Protection Act (COPPA)? It was passed in 1998, and this article specifically says that they believe Amazon is in violation of it.
https://en.wikipedia.org/wiki/Children's_Online_Privacy_Prot...
I guess it wasn't clear that I was also implying there may be something wrong when one of the largest companies in the world can sell ?? number of devices aimed specifically at children, without this regulation being enforced/checked for ?? amount of time.
Either enforcement, or regulation failed. I think we've got a lot of mechanisms for enforcement, as this article is bringing light to the necessity of.
So, perhaps the aforementioned "regulation" is not enough, and properly written regulation that can be enforced with some regularity and haste is required considering this is for children.