OverDrive is a strong player but they’re still a commodity. Publishers and libraries can use other lending platforms if and when they emerge as stronger competitors. This article serves as a good overview: https://openeducationalberta.ca/ciicm/chapter/public-library...

The problem is the publishers - they don’t always sign on to provide books to every new platform and don’t always release to every platform. But other platforms do exist: https://bookriot.com/comparing-public-library-ebook-platform...