Unless you use private servers rather than matchmaking systems and publisher hosted servers.

I can still play the now 19 years old call of duty 4: modern warfare. Online multiplayer works just fine and Activision doesn’t have to do a damn thing to maintain it.

Younger gamers may not know this, but all online games used to work this way, you’d hit the “online multiplayer” button and the game would start populating a list of player-managed servers hosting games.

It has always been a superior system to automatic matchmaking, and it still is.