Wii I dont really use that console myself anymore, my gf does and she buys the games in stores. But i know for a fact, since a ahem.. close friend did it, that is very easy to run cracked games on the Wii aswell.
Ps3 is the only one im not to sure about. But im sure its there, numbers from torrentsites on active console torrents show its there.
And something the industry is starting to realise all to well is that pre-owned is perhaps worst then piracy. Piracy can in no way be proven its a lost sale. If it wasnt available for pirating you cannot know if someone wouldve bought it or not. However selling second hand games for consoles is a guarenteed loss in sale for the publisher and developer. That person was ready to buy a new copy, and was instead sold a pre-owned copy. Something we see pretty much exclusively to consoles.
Thats why sony and MS shell out a lot of cash on deals to draw exclusive content and deals to their console. Look at all the unique IPs or preferential treatment that is sometimes given (hello DLC 2 months early). Something that doesnt happen for the PC as there is no big corporation that benefits from it, unlike MS who takes a cut from sales of xbox360 games or sony for ps3 games.
These companies have an active interest in getting sales and development for consoles, and would rather benefit from almost a total demise of pc gaming in favor of consoles. And they are willing to pay a lot of money on that. THAT is why developers prefer consoles, and piracy is merely the excuse they use.