3D printing is helpful too. The infrastructure created during the dot-com bubble of the late 1990s was also helpful. The UK is still profiting from the railway

3D printing is helpful too. The infrastructure created during the dot-com bubble of the late 1990s was also helpful. The UK is still profiting from the railway infrastructure created during the railway craze of the 1840s (https://en.wikipedia.org/wiki/Railway_Mania https://en.wikipedia.org/wiki/Railway_Mania). The question is just how much of the valuation of AI companies is because they are useful and how much is speculation...