If it's true, they probably use a system similar to library ebook loans. They have a certain number of licences that can run out, even though there's no technic

If it's true, they probably use a system similar to library ebook loans. They have a certain number of licences that can run out, even though there's no technical reason for it. I don't know why copyright owners would do it with Redbox since they get money for each loan.