Early ICEs also saw immediate value in static applications like water pumps or printing presses. It's not like there was a century of people tinkering with the thing trying to make it work without any purpose. It rapidly showed value and then was iterated upon and improved until it became practical to use in new ways e.g. being small enough and powerful enough to power a car.

I figure there's a small chance that the AI bubble ends up acting more like the UK railroad bubble in that after the dust clears and the overproduced infrastructure gets shut down we're left with the best rail lines in Europe, but I'm not going to bet on that unless and until the salesmen stop trying to sell everyone a rail line between their bedroom and the bathroom.