The cost of building out the infrastructure needed to satisfy booming demand for artificial intelligence is changing the way major companies allocate resources. That can mean an end to some jobs once done by humans. Yet in many cases it means repurposing money once spent on workers so that more capital can be devoted to boosting AI capabilities. Just how much money is being spent on AI is a hot topic as fears of a bubble in the sector grow, but the potential impact on workers in some sectors a...