Same thing that happened to pets.com or webvan.com and the rest of the graveyard of failed companies. A bunch of investors lose money, a bunch of market consolidation, employees get dilluted to worthlessness, chapter 7, chapter 11. The free ride of today's equivalent of $1 Ubers will end. A glut of previously very expensive hardware for cheap on eBay (though I doubt this last point will happen since AGI is likely to be compute intensive).

It's not going to be fun or easy, but as far as the financials go, we were there in 2001.

The question is assuming we do get AGI, what the ramifications of that will be. Instead of hiring employees, a business can spin up employees (and down) like a tech company can spin up EC2 instances. Great for employers, terrible for employees.

That's a big "if" though.