Earlier quoted context omitted.
We can both agree on the unfortunate future. But I think we can also both agree hoping that people will abide by your robots.txt file wont save us from that unfortunate future.
I think the difference is that now that the sites doing the scraping don't have a mutually beneficial relationship with the creator.
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)