This makes the Minecraft model look all that much better than it already was, users pay for an account, the servers are self hosted by the community, as far as I can tell on the surface level Minecraft would already comply with this legislation.
In addition to the sibling comment, even Minecraft server has an "online-mode" setting, and if it's set to false, it doesn't authenticate players. Whenever my family has played on LAN, we've never used any auth servers (which is clear because we don't give Minecraft any credentials). The setting only applies to LAN players, but that should be easy enough to work around with a VPN or something.
Does Minecraft's offline mode not work indefinitely? I'm not familiar with the official launcher but this article [1] doesn't say anything about needing to reconnect occasionally.
> First, you need to make sure Minecraft is installed on your device. Once this is complete, log in to the launcher while you are still online. This will save your login details for offline access.