"2, OK, they were sucking up the life energy of the planet. But don't many other organisations polute the air and the waters, or cut out forests? They weren't ecological, but I wouldn't call this evil."

yes there are many corporations today that. and you know what, those corporations ARE BAD! one of the messages of FF7 in my opinion, was not to allow for corporations to abuse people, destroy the environment, throw wars like a party, or lie cheat and steal, for the sole purpose of profit. its sickening, is what it is.