The reason is that Aldous Huxley's vision was far easier to implement. It didn't require a massive conspiracy, which is extremely difficult. Anyone who has ever been a checkout supervisor at Wal-Mart will tell you how hard it is to coordinate a large number of people with individual personalities, desires, etc. even if the end goal is something as simple as everyone taking a 15 minute break without having too few cashiers at once.
Huxley's vision just required a bunch of people independently trying to make money and becoming good at it, which is pretty much what people do best.
I don't think that's true. Bureaucrats are mostly well-intentioned. They're not working toward 1984, they're working toward what they see as a well-run government. When it comes to government people easily fail to see the forest for the trees, and view it as a living, breathing, single organism hell-bent on power. It's not though, it's a collection of people who are for the most part competent and well-meaning and who are simply facing a monumental task.
The entire first world routinely asks our politicians to provide us more services and more securities for less money, and then gets upset when they fail to deliver the impossible. They're not working toward 1984, they're just trying to stay in office and leave their offices a little better than when they found it.
Well have you ever heard that road to hell is paved with good intentions? I have seen more than fair shair of this saying being true in practice.
Bureaucrat may be well-intentioned, but they are mostly more prone to "do their job" than to question the correctness and impact of their deeds.
And that is without considering office politics or politics in broader sense. I'm working with government and I wouldn't rely on bureaucrat to do the "right thing".
They say that bureacracy is organization whrere group of people that think all "A" agree on compromise "B".
Huxley's vision just required a bunch of people independently trying to make money and becoming good at it, which is pretty much what people do best.