adding to the video I'd like to point out that where the Coma plotline is concerned both .hack series did it better
in the first dot hack series only 5 people were Comatose, and while everyone suspected the company, nobody could be sure because only 5 people fell comatose and technically nobody at the company DELIBERATELY did it, they were as clueless as to why it happened as the players
and in the second G.U. game, at some point a Virus triggers a 30 minuet long incident where All the players fall comatose and cannot log out (I.e. the plot of sword art online) BUT, being disconnected from the game will not kill them, and they all get better 30 minuets later, so almost nobody except those effected, even noticed that the incident happened