> Looks like it's time for in-browser scrappers.

If scrapers were as well-behaved as humans, website operators wouldn't bother to block them[1]. It's the abuse that motivates the animus and action. As the fine articles spelt out, scrapers are greedy in many ways, one of which is trying to slurp down as many URLs as possible without wasting bytes. Not enough people know about common crawl, or know how to write multithreaded scrapers with high utilization across domains without suffocating any single one. If your scraper is URL FIFO or stack in a loop, you're just DOSing one domain at a time.

1. The most successful scrapers avoid standing out in any way