I can tell just by reading your posts that you have absolutely no involvement in child safeguarding whatsoever.
You simply cannot judge whether someone is a good parent or an abuser by their appearance. You just can't. It's a very dangerous way of thinking.
And well presented, middle-class abusive parents are so much more difficult to identify and investigate because of the very bias you are showing. There is as much abuse in middle class families as in working class ones. But it's better hidden.
I'd also like to know who these numerous famous, well off people are and who SS didn't investigate because they were investigating them as the easy option instead.
You must be very confident of your facts to make such a bold claim.
Or you're just making it up.