As I understand it, there is an exclusivity deal with Microsoft which prohibits including NetFlix in the PS3 and Wii software. But there was nothing to disallow an application (available on disk) that just happened to look a lot like NetFlix. When the exclusivity deal expires, Netflix can be included in the PS3 and Wii systems.
When the exclusivity deal expires, Netflix can be included in the PS3 and Wii systems.