alt Hacker NewsThe difference is in licensing. Those platforms are protecting (or rather, monetizing) a database of human authored assets which those humans have given them a license to exploit.
Anthropic (and others) are trying to protect a stream of uncopyrightable, public-domain machine outputs.
I don't see how that's relevant. They have a license to redistribute my comments, but that's the extent of their legal rights with respect to my work. They're not my agent or my publisher. Moreover I don't have any say in the matter. If I'm pro AI scraping, I can't tell them "yeah it's fine to scrape my comment, don't put up any captcha walls". Finally, what if I dedicate my comments to the public domain? Does that mean they're in the wrong to put up scraping walls?