I think yours is a good analogy. Original creators have no obligations whatsoever, they have to maintain the server part for a time, and that's it. People might be up about it, but they should realize that this is part of the original deal. Closed source and software as service models naturally work like this, and it's not entirely the manufacturer's fault that people get the short end like this. They had the short end to begin with. And it's not like it's unreasonable to sunset a game from the early 2000s, with server and other features right in the open. People can and do run the stuff themselves just fine.