This is what caused the 08' crash. Everything was all tied together so as one massive bank failed it sent a cascading ripple effect through the entire industry which became a sort of black hole that took down many seemingly stable, profitable banks with it.
I can easily see the same happening with AI.
They're mostly either AI proper, or hardware manufacturers benefitting from AI boom, or provide cloud services to AI companies...
It wasn't like, "Nvidia took a hit and everyone else was fine". It was more like, "One or two companies were fine, and ALL others took a hit"