DDoS attacks are never permanently sustaining as it requires every user or PC to constantly use LOIC and clog-up the networks. Also IPs can easily be blocked which reduces the effect. Even when banned, an DDoS attack can slow down a server as it takes a process away from the CPU to deny access, Its just not as effective.
Plus all a downed server needs to do is be rebooted as its back up again. Then process starts all over again with overloading it.
It seems that many users asked them to stop so they can play online. The iirc channels that anon uses are typically public so people could have logged on and asked them to stop.
So it was fail from the start. Didn't Sony hire some program firm that stopped the hacking? And since "many users asked them to stop so they can play online," isn't that suppose to mean that they did NOT fight for consumers' right to play online? Shouldn't they have been smart enough to have foreseen this to begin with? It's pretty obvious they were thinking only of themselves and not the "rights of consumers." Therefore, you "change tactics."