The lower classes just worked and took drugs (soma) so they could withstand working.
Of course Huxley was writing sci-fi but it does fit into human nature of kind or messing around if possible. Look at chimps… they basically just gather food, sex, and lounge about. We aren’t too far evolved from chimps.
I think this alpha and beta framing is a useful one. I just watched the John Carmack keynote where he is talking about the Oculus operating system, and in it he is seething that the team around him is not valuing simple and piling complexity and its resulting slowness. In a world where only the people who were truly interested in innovation were working with him, I expect that the accidental complexity would be minimized, and the efficiency of his work would go through the roof even more than it has. Trying to make everyone as productive as possible turns out to have large negative effects on those who are as driven for innovation and those people are so productive that this is a net loss long term.