$10b is nothing compared to what was destroyed in the GFC. It's nothing compared to what the US spent on a largely futile war in Iraq. It is nothing compared to what G8 governments spend every year on defence. FFS, damages from Hurricane Sandy are estimated at twice that figure. It's peanuts.
Somewhere along the line, the message that this is R&D, and not science has been lost. Politicians honestly seem to think that this is another of those toys that scientists are always wanting to build, and not the solution to the world's energy problems. Dear politicians - no, this is not another space telescope. It's not even another LHC. It is nothing more or less than the one technology that can save the planet from the worst ravages of climate change, and they quibble about the cost. Madness.
I am not making an anti-American point here. UK politics has equally daft politicians. But politics is full of people like this:
http://message.snopes.com/showthread.php?t=87390
> "Wind is God's way of balancing heat. Wind is the way you shift heat from areas where it's hotter to areas where it's cooler. That's what wind is. Wouldn't it be ironic if in the interest of global warming we mandated massive switches to energy, which is a finite resource, which slows the winds down, which causes the temperature to go up? Now, I'm not saying that's going to happen, Mr. Chairman, but that is definitely something on the massive scale. I mean, it does make some sense. You stop something, you can't transfer that heat, and the heat goes up. It's just something to think about."
I certainly don't have a great idea. I'm assuming you won't be able to put a fusion reactor in a car or airplane. Will a fusion power plant be roughly the scale of a current fission plant? What will be the output? What are the risks? And how much do we trust these projections?
Edit; for those just discovering polywell fusion; Bremelstrung radiation is the primary reason why it may or may not be practicable.
Some of these are well-funded, others are struggling. Even some of the other tokamaks are struggling. MIT's Alcator C-Mod has the highest magnetic field of any tokamak in the world, and the potential to lead to a smaller, cheaper power plant. The whole project was nearly cancelled a year ago.