I honestly didn't know that there was a need for another 7 passenger SUV. Are people really buying these things?
Well they sure aren't building these things with the Canadian market in mind. Large SUVs like the Durango, Tahoe, Expedition, and the various luxury variants sell much better in the U.S. than here.
In the case of Jeep, this isn't strictly about offering a seven seater; it's about pushing further upmarket and capitalizing on the massive brand equity they have. I would assume that developing markets like Russia and China are also a factor.