Overly negative - Maybe less than $1.5T, but certainly more than $10b, even if indirectly. It's not an apples to apples situation.
GPU are already the easiest parts to change or throw out, and i fear that they would all be turned into e-waste once demand for them goes down.
The fact nvidia banned the us of conusmer grade GPU in ai training doesnt bode well either once demand begins to fall down.
We dont even need to be in a bubble, everytine a hot new gpu is released, we couks see hundreds to thousands of A100's getting thrown out.