“Once in the public domain, works can be made freely available. Organizations that have digitized text of these books, like Internet Archive, Google Books, and HathiTrust, can now open up unrestricted access to the full text of these works. HathiTrust alone will open up full access to more than 35,000 titles originally published in 1926. This increased access provides richer historical context for scholarly research and opportunities for students to supplement and deepen their understanding of assigned texts. And authors who care about the long-term availability of their works may also have reason to look forward to their works eventually entering the public domain: A 2013 study found that in most cases, public domain works are actually more available to readers than all but the most recently published works.
What’s more, public domain works can be adapted into new works of authorship, or “derivative works,” including by adapting printed books into audio books or by adapting classic books into interactive forms like video games. And the public domain provides opportunities to freely translate works to help fill the gap in works available to readers in their native language.”