I understand his frustration : I have a similar issue with video games - Xbox gamepass games sometimes leave the service. So I built an app that takes all my games across the various gaming services ( steam etc ) including the Xbox gamepass ones, and it grabs them from the achievements ( games I have played ) on top of the catalog ( available games )should they have left the catalog

That way games that are gone remain and I have a Netflix like interface to view all my games past and present