As long as that content is valuable it will be scraped and used.
Theres no solution to this. So the structure of content sites will have to adapt.
How? I dont know, likely will vary by publication and content type.
Is it fair? Probably not
Is it stoppable? No. Not without heavy, global legislation. (read impossible)
If a house is robbed, you don't give the burglars a pass and say "well their security system wasn't very good."
Yes, the defensive measures probably need improvement. But that doesn't mean that the act they are defending against is wrong.
Its a sign on the door that says "Please don't rob me" while the door is unlocked and no body is home.
In such a large ungoverned system as the internet morals don't dictate what people do / dont do.
So it doesnt matter whats wrong / right.
What does matter is what system participants will / wont do
And they will scrape your site if you don't put up any real defences.