[TeaDude]

Just off the top of my head, Ross Scott on youtube (AccursedFarms) has plenty of videos on the subject. A few of them are tucked away in reviews but he now has a dedicated "dead game news" series.

These may not be games you'd want to play but the important message is that it's concerning that the biggest publishers (Ubisoft, EA etc.) can release stuff that will randomly die at some point in the future for no good reason and that they won't even release a patch or server software so you can play the product you paid them for.

[iLoveOncall]

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.

[brokenmachine]

There's lots of games where even the single player campaign needs servers to use.