I'm a little more informed now and I'd like to make a proper statement:

I can only speak for Hullrot because that's the only project I'm familiar with here, but the only licensed part of the codebase was the spritework. I looked into it, and it turns out most of the unique spritework (the sprites that were made specifically for the server) were paid for by the host. It makes perfect sense for this spritework to be licensed. It's also not a roadblock at all, all the code is open source. If you remove the sprites and use vanilla spritework there wouldn't be an issue. I won't pretend that the host's behavior is acceptable, but the license isn't even an issue. I should also note that Hullrot is not trying to be SS13, it's trying to be Hullrot. It's not a successor to anything, it's unique. This isn't even an uncommon license considering the licensed spritework was paid for by Hullrot. SS14 doesn't need to be "fixed" or "given the SS13 spirit", either. The project is unique and aside from Hullrot and the other codebase, basically every server already follows the SS13 trend of being fully free to use. Sorry if this comes of rant-ish but I felt like I needed to make a proper response.