Japanese P-to-E book services pre-dated 1DollarScan, and they had less formally connected AmazonDirect to their service back in 2012.
Nakano of 1DollarScan said: "One interesting option we offer in both countries is Amazon Direct. A customer might buy a book on Amazon that isn’t available in an electronic format, and have it delivered directly to us. We scan it and then the customer receives the e-book. This is a good service since many books are not available as e-books, especially older books. The usage for Amazon Direct is really high."
For those with copyright questions, Nakano said earlier in that piece: "We also have a copyright management system on our website for authors and publishers. If publishers do not want us to scan their content, they can register with us. We are open and cooperative, and so far nobody has registered."