alt Hacker NewsPutting on my Pollyanna hat...
Or it could make it a lot cheaper, if the server were developed entirely on open-source infrastructure from the start. Hopefully the actual game logic would be developed entirely in-house, making it easier to audit before releasing.
Most likely the engine providers would spin off their server components as OSS for this express purpose so their customers can easily comply. This regulation could be a huge win for making the game industry adopt more OSS.