You're talking about games that were online-only where the servers have been shutdown. This is not at all what the comment I'm responding to is about, which is

You're talking about games that were online-only where the servers have been shutdown. This is not at all what the comment I'm responding to is about, which is games that rely on a DRM that connects to the internet to validate your installation, meaning that even full solo, fully offline games would stop working.