Why not more high-speed trains in the US? I think that is an interesting question. In Europe we’re spoiled with TGV and other 160+ mph trains, and in most countries we find 100+ mph lines, including in former Eastern Europe. So why not in the US (forgetting for a moment the Acela Express)? Are they technically behind?

Naah, not really, they are capable of both this and that in other areas. So, what then – don’t they like trains?

Well, judging from the number of posts here in the forums, they do… OK, the money then?
Let’s have a look at it. Taking the Amtrak from Chicago to New York, a distance of about 800 mi, costs $199. Taking the train from Calais to Nice (that’s in France

), also a distance of about 800 mi, costs (the equivalent of) $220. So, just a little more money into the European railway then. And, yes, the French trip takes 10 hours, the US one 20 hours…
No big difference in money, so far. But there’s more. Looking at how much people go by train, statistics tell:
US: 6,200 M passenger-miles per year
EU: 230,000 M passenger-miles per year
With the US having roughly 300 M inhabitants and the EU 500 M, we get the miles on train per inhabitant and year:
US: 21 mi
EU: 460 mi
Right, a stunning difference! So the difference in revenue between US and European passenger rail traffic is more than factor 20. 20 times more money to invest in high-speed rail, if you like (and we do

).
So how did this happen? Going back a 100 years or so, I think the US and Europe were on more equal terms with respect to passenger traffic. But then the automobile came along… And Henry Ford, who saw to that the man in the street could afford a car. With a car, and the train no longer being the only option for long-distance travel, revenues for the railways quite naturally decreased. We didn’t have a Henry Ford in Europe, so trains remained profitable, allowing investments to keep them attractive as a convenient means of transportation even when cars became more common also in Europe.
That’s my theory anyway!
[ Disclaimer: You could probably find more detailed statistics and other figures that show the difference in revenue to be something else than 20, but I think you get the idea. Also, I don’t have anything against Henry Ford, or cars. ]