Of course not every game is a certified banger, but there's more than enough notable games on that list that made an impact on the industry and should've been preserved for that fact alone.
You didn't create those games. Games are products people work to produce. Radical Heights was a free to play game that was shutdown in a month. What would you force them to do? Release their server code for free so anybody can run a Radical Heights server that people can connect to and play? So a whole bunch of people who never gave the developers a cent have the right to demand the game be given to them simply because it existed for 1 month?
If a game asks for money in any kind of way: Yes. That should be the cost of (trying to do) business.
Alternatively, a full refund for everyone involved, even Kickstarter backers, would also be acceptable.
That's just blatantly false. People bought the founders pack were never refunded for example. Those people being entitled to the server software or a refund is anything but greedy, even if that only applies to a single person.
If they can play against bots, which already exist in the game, or band enough people together with access to the game to play on a server one player is able to host, then yes. That's what I'd expect at a minimum.
If they want to keep some form of DRM then that's not my job to figure out. This wasn't a problem back in the day when server software being distributed was the norm, so it shouldn't be a problem now.
Though personally I'd be in favor of abolishing online DRM entirely, but that's another story.
So you want people to follow a law without knowing how it should be followed? You signed a petition and now it's someone else's problem if they get in legal trouble or not? This makes the world a better place because it protects theoretical people?
At least try to make an effort to understand what I write.
I said it's their job to figure out how to do DRM -if- they want DRM. If they can't figure out how to do that then the answer shouldn't need to be spelled out explicitly: No DRM. Simple as that.
If you'd rather see games you spent money on being taken away from you based on the whims of corporations, just to make sure others who might not have payed for it also can't play it, then I don't know what to tell you.
I have no authority over anything, so yes, they can. What I'd like to see is an option to buy an offline copy of the game and any add-ons I bought, but no one does that. What Stop Killing Games is looking for is for the server to be made available after the game's end of life so that you can continue to use anything you paid for.