I propose using the internet the way it was designed: Open and readable by everything (including bots). Scraping is a legal issue. There is no technical prevention mechanism that isn't theater.
> Scraping is a legal issue.
The problem is... it's a legal issue we cannot solve. America and China are large enough to not give a fuck about what everyone else wants.
A better technical solution imo is more P2P hosting -- say content addressing. Something designed to deal with the scrapers -- and maybe even make them bear infrastructure costs.