> And PoW doesn't sound reasonable because it sets mobile devices against the scraper's servers.
Scraper servers and mobile devices have different access patterns though. I I'm reading tweets then I'm fine waiting 1 second for a tweet to load. Page load times for this kind of bloated stuff are super slow anyway, meanwhile my mobile could spend a second or two on some PoW. But if you want to large-scale scrape, you suddenly have to pay for 1bn CPU seconds. And this PoW could even keep continuously increasing per IP. 0.1% with every tweet. Not noticeablr for the casual surfer sitting on the toilet, neck-breaking for scrapers.
> If all of this was just so easy, scraping would be dead. Good that it isn't.
Small-scale scraping could still be provided through API access or just a login.
The reason they are not doing the "easy" thing is that they don't see a need (yet, perhaps). Just get an account, they'd say, and they are right. It works for Instagram too, except for some weirdos who nobody really cares about.