If the company doesn't have any money to run the servers then they should allow users/communities to run their own servers. The company can have subscriptions a

If the company doesn't have any money to run the servers then they should allow users/communities to run their own servers. The company can have subscriptions and/or microtransactions, but the moment they stop providing the servers (preventing the game running) then they would need to allow users to run their own servers (even if they reverse engineer the server protocol) -- so DMCA would not apply in this case. Alternatively (e.g. if the server is an authentication check) then they can release a patch that removes that check.