Even George Orwell's quote hints at this problem:
"...we must all cooperate and see to it that everyone does his fair share..."
Everyone's "fair share" is whatever they actually do. Everyone is always doing their best, given their genetics and environment. No one chooses to be "dumb" or "lazy" because no healthy person would choose that, given an actual choice. The person that does lots of hard work is able to do so only because they're able to, and not by choice either.
If we could get everyone to embrace this worldview it would resolve almost all of the progressive/conservative divide, and make it much easier for people to work together towards common goals.
But most humans are addicted to the belief that they're in control of their lives, and if they're in control, everyone else has to be as well. And so we can't have nice things.