Concord is not completely dead. Community developers have brought Sony's shut-down hero shooter back online with fan-made custom servers, rebuilding its backend API and getting full matches running again.
It’s early stages and buggy, but it’s on its way. All games, even bland, boring, or bad ones, deserve to remain playable.
I don’t see a “and they need to host it”
But allowing/enabling community servers would allow it to stay playable at minimum cost to the developers