If you want to play the game of "find the worst things corporations have done to prove they are worse than states", then you will surely lose. How does the actions of those corporations compare to say the bombing of Hiroshima, or the Great Leap Forward, or the Holocaust?

It's also worth noting - both of your examples involved the state actually doing the dirty work.

Funny how libertarians never seem to consider dumping millions of lbs of poison into the environment an "initiation of force"

Citation needed - AFAIK there is no such consensus.