I can't believe the old "science isn't profitable" canard is being trotted out to full effect on HN. The fact of the matter is that science is imminently profitable, and this is so obviously true that it takes nothing short of a true believer in the benevolence of the government as the superior investment entity and the free market as bogeyman to believe otherwise.
I mean this isn't /r/politics, is it?
The desire for profit is the single largest driver of scientific and technological innovation, period. Yes, NASA and DARPA have created some amazing things, but what about the hundreds of billions which are spent by privately held entities' R&D departments every year? Does all of that research yield nothing of value? The pharmaceutical advances? The electronic advances? The advances in automobiles, computers, housing, information access, and, now, space travel, as well as virtually every other product on the planet - do those mean nothing?
Of course they do. Private funding for research constitutes the lions share of research funding, and that private research leads to the vast majority of scientific and technological advances around the world.
The line that science would not happen absent government funding is so demonstrably false that to even make such a claim is tantamount to shouting to the world that you are a first-class idiot.