We're comparing actual scenarios that are happening today. You seem to be arguing that it's ok for Google wiretap people, but not ok for the government to do so, because the government has killed people whereas Google has not.
(Shrug) We live in a world of shades of gray. We only have history to guide us. Take your eye off the corporations, and you get spam, collusion, the occasional oil spill, and maybe a Bhopal or a Fukushima every few decades. Take your eye off the government, and the consequences are measured in megadeaths.