*shrug*
If there was a real interest in doing this companies would sell the server software as is after they were done supporting it for fans.
Why would they do that even if the demand was there? They WANT you to give up on the old game so that you buy their newest one. Unless they are selling to you in a re-release videogame companies absolutely do NOT want you to play their old games because they gain no business if you're content playing old stuff that is no longer for sale.
Ethically I have no issue with this. You bought the game, you own a legit copy, you just want to get the full experience of the game you bought and the company that made the game no longer offers that so someone else does it. It's not like anyone is really getting content for free here. From a videogame historian point of view this sort of thing is really important. Online games are going to be lost to time. It's a part of a game that can't be saved in a ROM or preserved in a cartridge or disc. It's totally reliant on the parent company who treats their creative works like a disposable commodity. This sort of thing is good for videogames as an artform.
Now will the government budge on this? No, of course not. How often do they side with consumer interests over corporate interests?