Originally Posted by HarryT
To the best of my knowledge, that's the way that ALL eBook library systems work. A library buys a licence for a specific number of simultaneous loans of a given book.
In Scandinavia they can lend out an unlimited amount of copies, libraries pay a price per borrowed copy, in Sweden it amounts to €2 a copy. Hence, libraries have now implemented restrictions that limits a borrower to one or two copies a week. So if you want to borrow an eBook and you haven't reached your limit you will never be rejected or put on a waiting list.