In a broader way, Brave new World is about a society that looks Utopian on the outside but beneath the surface is a nihilistic nightmare where people exist for no greater purpose than for that of their assigned role and to satisfy their base wants. I wasn't touching on the technicals for how Huxley's Brave New World came to be because they're not what I'm driving at. The people in BNW aren't just cogs mindlessly plodding away at their assigned role, they're also comparable to animals in a way. They have no desire to affirm themselves as individuals or self-actualize through the formation of a greater purpose. They just thoughtlessly exist from moment to moment, drowning themselves in drugs and sex and never bothering to ask for something beyond that. THAT is the future that awaits us as I see it.
The Savage's speech to the World Controller argues for the greater purpose, but he doesn't give any reason why striving for a greater purpose would be better for the people than their current predestined existence. The World Controller argues that the world is stable and people are happy. The society of Brave New World is actually a desirable existence for many people; it is only a minority, represented Bernard, Heimholtz. the Savage and Mond, who suffer existential angst and aren't satisfied with sex, drugs and sports.
The key difference between BNW and reality is that the distracted majority will not live happily ever after in reality. Huxley imagined a world were everyone had an economic role, but in the real world automation will take the place of most of Huxley's Gammas, Deltas and Epsilons and some of the Alphas and Betas. Society simply won't donate them the means to permanently anaesthetise themselves will sports, sex and drugs.
I agree with DBT's prediction that there will be period of upheaval, represented with the impoverishment of the formerly-working class. When this happened during the industrial revolution it led to the rise of the socialist movement to improve working conditions. Next time around, it won't be for working conditions; it will be for living conditions.
And who knows--perhaps we will have savage reservations where people can work for a living.