Not the case. We routinely distinguish in law between possession for private use and dissemination.
Sure, in law, but not in photography in the real world.
There are lots of places where you go that have "no cameras" signs, I've never been anywhere with "cameras encouraged, distribution of images prohibited" signs.
Laws that can't be effectively and fairly be enforced shouldn't be on the books, they breed a lack of respect for laws in general.
No, it isn't. Establishing a difference between those two actions enables the press to take pictures at events with a large number of attendees and then only ask those for permission whom they want to depict.
Which if enforced would have exactly the same effect as simply banning cameras.
Spoiler :

I can take a photo of you. And Leoreth, Borachio, Zelig and i can meet for tea and our weekly round of bridge and i can show that photo to them, heck they may even copy it for the purpose of private archiving in one them things called photo albums.
That doesn't exactly make that photo "published".
What makes a photo "published"?
None of this so far entails a justification for photographing (and publishing) Borachio without cause when he leaves the house in the morning.
I'm taking a photograph of my car in my driveway, Borachio is spending the entire morning mowing his lawn in the background.