Is it still carelessness if one knows they are going to kill people for their own selfish, perhaps greedy, goals?
I don't see such a big difference in intent. I think it's more that terrorist groups have people that do what they do for selfish reasons very directly. And corporate groups have people that do what they do for selfish reasons in a way where they are acting on behalf of shareholders' greed, and they aren't really directly harming anyone right now. So it's very indirect. But the intent is kind of similar morally - personal gain at the cost of crimes against humanity, right?
You may recall Exxon's famous memos from the 60s or 70s when they realized that continued use of fossil fuels was going to incinerate the planet.