Data, network bandwidth, and CPU/Processing time from essentially every website in the world, and when you’re paying for cloud power to run your website the cost of webscrapers running a train on your digital asshole adds up QUICK.
It’s why normal human being people get sued to shit for webscraping data from certain companies who care. But companies don’t get sued because go fuck yourself. Kill bytedance.
Except companies have sued people for web scraping.
https://www.informationweek.com/it-leadership/linkedin-sues-after-scraping-of-user-data
Even web scraping for research purposes, not for competitive purposes.
https://www.engadget.com/2016-05-17-publicly-released-okcupid-profiles-taken-down-dmca-claim.html