Security and Privacy threats effects big business

Recently, Sony Online Entertainment (SOE) faced a total fiasco when intruders stolen personal information of about 77 million users and around 24.6 million credit and debt cards credentials. SOE provides online entertainment services (with monthly/annual subscriptions) to hundred million of users. These include online-multi-player games like EverQuest II, Free Realms, DC Universe, etc., via Sony's PlayStation Network (SPN). Intruders had stolen PSN and Qriocity's databases which brought great dis-satisfactions for paid customers and even worries for those who ever used their credit cards for subscription. The question arises that what could be the possible security measures or decisions which could give upper-hand to PSN/SOE in the hand-race with intruders? What if those attacker stole personal info from FB? Is P2P a choice to provide security?