"Crawling" might be a strong word. But what else will they do if rackmounted compute hardware isn't consuming every bit of capital expenditure in tech? Without OpenAI and Anthropic driving demand, why vastly overspecialize in high bandwidth memory?
The bubble popping will be UGLY. Not just because some of the major players in tech will have at the very least, very bloody noses, but because institutional investors will see mega-billions of dollars in wealth disappear. Tech stocks related to AI have been the only real area of growth in the last several years, so if you have a Vanguard or Fidelity investment account, a defined-benefit pension or just fancy yourself an independent investor, that money is going to go poof the same time people with real money realize they've been fleeced. Normal people aren't going to be able to retire. People are going to lose their homes over this.
No, nobody can run an HGX200 at home. nVidia's PCIe Compute cards don't have display outputs on them, although I've read there are ways around that. Nobody is going to put HBM GDDR7 on workstation-class PC hardware. Maybe there will be wins for availability of high speed network devices or lower cost colocation or cloud hosting services, But I think memory manufacturers are probably going to collude to keep prices high. They've done that before and it would make sense for them to keep prices high as long as they can. What do we do with compute nodes? Don't know, don't care. They'll probably get turned into real time face recognition systems that governments use, or computer vision systems to identify more surfaces to cover with ads while operating self-driving delivery trucks or something.
My hope is that Nvidia and the AI firms lose 90% of their market cap and one or more of the bubble giants like Meta or Oracle winds up in an Enron death spiral. These companies aren't too big to fail and moreover, we need to see them humbled. They already act with utter impugnity with regard to consumer or customer rights versus their obligations. If we don't, we're just going to wind up with something worse than William Gibson or Neal Stephenson's tech dystopias.