IT and Libertarians
I've noticed that most of the libertarians I meet work in IT. Based on no evidence whatsoever, I hypothesize that their work environment directly influences their politics. In an IT environment, scarcity of resources isn't really a problem. Most people have computing capacity to spare, and if your current system can't handle, just wait till the next hardware/software upgrade. In their world, the market constantly delivers improvements of all sorts. It's hard for them to imagine a world with problems that the market can't solve, with growth rates in the low single digits.
Much as the Baby Boomers' views were skewed by the world they grew up in, the techies views are skewed by the work they do. The bricks and mortar world just doesn't work like that.