I know it would be radical, but you could require that they release the server code open source. So it’s not their responsibility to run it, but if the community wants to run it, they can.
Or, if that’s complicated due to licensing etc, they could release a minimal server implementation that maybe doesn’t scale the same way, but at least has the interfaces covered so the community can take it from there. The game could at least still be played.
I don’t normally do this, but I see this from time to time, so just so you know:
wary: feeling or showing caution about possible dangers or problems.
leery: cautious or wary due to realistic suspicions
weary: feeling or showing tiredness, especially as a result of excessive exertion or lack of sleep
I’m sorry if this was annoying rather than helpful!