Stupid idea
"While parents should be responsible for their children's online safety, in practice people find it difficult to put content filters on the plethora of internet-enabled devices in their homes, plus families lack the right information and education on internet safety."
So, there's a lack of information and education on it? Surely the answer is better education and information then?
Also, they say that schools have filtering. Yup, that they do, but it is also very expensive. A commercial solution which can handle a 100Mbit connection for a school like ours costs about £4k + support. That deals with about 500 connections at once. Scale that up for a huge ISP, and you soon have huge costs involved. Who is going to pay for it?
In my home, I have no need for filtering, so why should my bill end up going up to cover this cost?