Also thanks for spreading bad information.
You're not wrong about robots.txt, you're wrong in a much more broad way. There is in fact an extremely dangerous law that could easily ensnare what you're talking about:
I don't thing that browsing a web page and saving it's content it's the same than scamming people by doing fake online site. This is growing in our country and the local police don't have any rights.
If it's a global problem we need to have global rules, we can't have Chinese not respecting Authors' rights and in the other hand only blame local people it's stupid.
Specially when it's non-tech people that do the rules, they don't know tech therefore should not say anything about it.
EDIT: You can be mad at me and down vote, but what I say is true and relevant. There's not only US in the world, specially when there's other way than protecting your site behind a robots.txt
Obviously some countries have a more lax enforcement than others, but don't be surprised if the US starts squeezing and one day you suddenly get a knock on the door.
Using simple conditional tests in haproxy, I stop most of the bots from crawling anything more than my root page, robots.txt and humans.txt. Anything else gets silently dropped and the bots will retry for a while then go away. I don't see anything in the logs beyond the root page and robots/humans.txt any more.