Just look in the about/credits link in just about any studio's game or software product and you will see it is standard practice to look over and include licens

Just look in the about/credits link in just about any studio's game or software product and you will see it is standard practice to look over and include licenses as needed of all 3rd party libraries and code bases used in development and credit them as appropriate. While the end user might be sloppy on checking the license aspect, developers certainly are aware at some stage, especially commercial developers by the time they create or modify their about dialog.