Are you aware that you don't need turnkey cloud services for indie multiplayer right? Even Godot lets you ship a server binary that allows people to host their own games. Many other indie multiplayer games do, we've been doing this since Doom. We're not talking about MMOs here.

There is literally zero reason that Lethal Company needs cloud services for their servers, or for it not to allow players to host their games. EOS & co. are golden handcuffs, and designing the multiplayer system from day 1 with preservation in mind is not that much more work. Of course Epic wants you to use their easy solution, it's called vendor lock in.