An AI bust is coming. But when? And who will be hit hardest?

There's a battle brewing over which country will lead the world in Artificial Intelligence , and the US has bet the house, economically, that it will be the winner. Today, international and political editor Peter Hartcher on what previous infrastructure booms - such as the craze for building railways in the 1840s or the dotcom boom of the 1990s - tell us about where all this will lead, and which…