If elites think they can move off planet and somehow survive a total collapse of earth's ecosystems, they are in for a rude awakening. An independent colony able to maintain its inhabitants in any kind of comfort will be dependent on the earth for the foreseeable future.
Its actually difficult for me to believe that any elite would be stupid enough to think they could survive an earth environmental catastrophe in space.
I'm pretty sure at least some of them are dumb enough to think they can survive it on earth, though. And they might be right!