Bartleby licenses much of its solution content from major publishers like Cengage, Pearson, and McGraw-Hill. In Q3 of this year, Pearson filed a technical abuse complaint citing a 340% increase in "offline copies" of their copyrighted instructor solution manuals. The patch was not a choice; it was a contractual obligation.

The cat-and-mouse game between students and publishers has entered a new phase. With the rise of AI proctoring, browser fingerprinting, and server-side rendering, the era of simple Python scrapers is ending.

Some cybersecurity analysts suggest that Bartleby allowed the downloader to exist to onboard students. Just as Netflix once ignored VPN users to grow its subscriber base, Sidekick may have tolerated scrapers because every user running a downloader was still a user viewing content —good for ad impressions and organic search rankings. Once the platform reached critical mass, they pulled the plug.