alt Hacker NewsEven private servers doesn't quite solve the issue. Minecraft is an example where you can run the server but it requires clients to login to the microsoft account. I think you can still bypass the check on the server but clients have to be cracked or previously authorised for offline play which only lasts for a certain timeframe. So Microsoft can take away the ability to play minecraft despite the game server binary being available.
Whereas a game like Arma 3 has its own dedicated servers and has no such login requirement so theoretically you could still play that in 50 years time, but that might still depend on Steam DRM.
We have a lot of client side controls right now on DRM and logins which make the dedicated server only part of the problem.
With Minecraft, there isn't even a need for Microsoft to do anything. The authentication servers experience regular periods of downtime/inaccessibility, making you unable to join any server, even if you have already launched the game and have joined a server in that session before. It's extremely frustrating.