When you take into account the fact that a large enterprise might have tens of thousands or hundreds of thousands of machines, the job of securing those machines is very difficult and keeping them secure over time is even more difficult still.
If the trends continue, I think it is likely that game platforms will become a more attractive target for attack in the future. Looking far enough ahead, game platforms might ultimately become an even more attractive target than general purpose PCs.
Rather than setting a universally high security bar across all systems in the enterprise, an enterprise might segregate systems into different 'zones,'