IMHO it has nothing to do with the governments, in Europe there's no that kind of money and the investor mentality is very different than the Americans and the European culture is much less accommodating to failure.

It's the European way to roll, the Brits are trying to be a bit more like the Americans but its worlds apart. The American spirit is something else, I wish we had it in Europe but maybe its not compatible at all with the European way of life. So, if you feel adventurous, motivated and ambitious you go to USA to make it big.