It also depends on the audience that is willing to hack a console and then you have to identify what games they would most likely own. The majority of the Wii audience is casual, so they don't know anything about console mods and they only buy specific games for their system. The Wii games that pirates would most likely play are the same games that bombed (Red Steel 2, NMH, Madworld).The majority of the 360 audience play's online and so aren't willing to hack their console because then they lose the feature they use the most. 

The PS3 is owned by mostly 25 to 35 year olds who would more likely know about things like mods and how to implement them, they don't play online as religiously as their 360 counterparts do and they probably know more about the releases outside of COD, Halo, GTA and Gran Turismo. These are the people who would mod their console, people who have spent alot of money on a high end device that have all these media capabilities that they know how to take advantage of.

I'm not a stockholder, but I do care about my favourite games. If a new IP comes out and it bombs despite being reviewed very well, then pirates would partly be to blame. That means that one of my favourite developers could go under, a sequel for the game can never be released and I'm left disappointed.