Maybe it would be more accurate to say most people couldn't care less about the Earth's "imminent demise" (whatever that means). I mean sure, there are lots of people who say they care, but how many have stopped driving cars, or flying planes, or eating food shipped from the other side of the planet, or living in giant single-family homes with huge lawns, or any of the countless wasteful convenient things that our society runs on? If anything I think big tech companies have been more environmentally conscious than most, so I don't think you can just use them as a scapegoat for why the world is the way it is. Individual people are causing the problems, it's not just big evil corporations.