Daniel A. Gross wrote a piece for New Yorker about the surprisingly big business of library e-books:
In the first days of the lockdown, the N.Y.P.L. experienced a spike in downloads, which lengthened the wait times for popular books. In response, it limited readers to three checkouts and three waitlist requests at a time, and it shifted almost all of its multimillion-dollar acquisitions budget to digital content. By the end of March, seventy-four per cent of U.S. libraries were reporting that they had expanded their digital offerings in response to coronavirus-related library closures. During a recent interview over Zoom (another digital service that proliferated during the pandemic), [Steve] Potash recalled that OverDrive quickly redirected about a hundred employees, who would normally have been at trade shows, “to help support and fortify the increase in demand in digital.” He recalled a fellow-executive telling him, “E-books aren’t just ‘a thing’ now—they’re our only thing.”
Excerpt from the article