Those games are unaffected whether or not SKG is written into law. If ojr of those games has an optional multiplayer component all of a sudden it can come under the purview. One of the things SKG has pushed down the line is what is “playable”. There is a very small but very active online community for a bunch of games that would call the online part of their game a requirement. The last of us and uncharted had very unpopular multiplayer modes off the top of my head.

Small multiplayer “friendslop” games - things like Lethal Fompany, Peak, Totally Reliable Delivery service. They’ve been smash hits, wildly popular but I can definitely see a world where those games just don’t get made when you add a new layer of liability, potentially in perpetuity.

Regarding the "friendslop" games - I don't see an issue, the companies that provide those game with online services will adapt to the new requirements to keep getting money from those game developers.

Regarding the optional multiplayer modes - the developers will probably not use some complex architecture for this, so giving it to the community will not be that hard. Also there are multiplayer games that do support community servers out of the box, so it's not an issue to make a game like this.