Here's what I think would happen if anyone, by tomorrow, could download GPT 5.1 for free and run it performantly on something like a $500 laptop:

* It would stop datacenter- and other related infrastructure construction, making huge investments effectively worthless for companies like Oracle and Amazon, and of course hurt the construction sector.

* It would hurt the companies you mention, plus a many more including NVidia, likely in ways that would lead to large-scale layoffs.

* It would seriously hurt corporate and VC investors and likely make them much less interested in large investments for quite some time, thus affecting other sectors as well.

* It would seriously hurt index funds and pension funds.

A number of years down the line, if LLMs are indeed capable of significantly boosting productivity, I'm sure we'd see a recovery, but when large bubbles suddenly burst there's usually some pretty serious fallout.