I guess I am looking for the technical developments that would provide such an economic pivot point, such as the changes in computer science and biotech that are taking place at this time and are causing economic upheaval.
Would it be mechanization of manufacturing in 1890's? The mechanization of agriculture in the 30's? First wave of electronics in the 70's?
These technical revolutions are coming closer and closer together. At some point they will converge and change will be the "norm". Will this sort of boom-bust cycle cease at this time?
Not expecting definitive answers for the last paragraph :) - just tossing out some ideas.