RE: taken out by whom? The government is on record stating that their concern is with state-owned enterprises taking control of Canadian companies, especially those with oil sands. Encana does not have oil sands and holds a good deal of its hydrocarbon interests south of 49. I would guess that most of Encana is already owned by American interests.
IMO, a take-over of Encana would be a good thing. Suncor would work for me!