Those companies fired the workers and replaced them with AI already, so the benefit they bring to the broader economy is far smaller (might even be negative by now) and them dissapearing is far less likely to cause "economic fallout".
Even though that's what Neoliberal politicians have preached to us for decades now, companies aren't inherently "good for the Economy" - they might, but then again they might not.
Plenty of companies out there add up to a negative to the Economy:
- Maybe because they have huge Negative Externalities (i.e. for example, emitting lots of Pollution)
- Maybe because they abuse dominant positions in Markets due to Barriers to Entry in a way that makes things actually worse for most people (reference: enshittification)
- Maybe because they're mostly extracting wealth from the broader Economy through rentseeking rather than producing wealth (reference: most realestate investors)
- Maybe because they're actually extrating more from the Economy than they put back in it (for example companies getting billions in subsidies to create literally a handful of jobs, or companies employing people with such low salaries that it's only possible because said people also receive Social Security support)
- Maybe because almost all the wealth they produce does not end up in that Economy (for example, they're using Tax Havens to avoid taxes and their owners pay tax abroad or even don't pay any tax at all)
Companies aren't there to benefit the Economy in any way form or shape, they're there to benefit their owners. Some companies might happen to benefit the Economy, often because they have no other option (for example, they're forced to employ people in order to actually operate and make money for the company owners, thus indirectly help the Economy) but almost invariably every single thing that helps the Economy is for a company "losing money" which would go to the company owners instead so they generally fight like crazy to actually reduce it: they try to spend less from suppliers, pay less to workers, pay less or no tax at all.
Helping the Economy almost always runs counter the one true goal for the existence of a company - maximizing shareholder profits.
Further, when a company dissapears it doesn't mean that the Market need that they're serving dissapears with them: in almost all the cases the need is still there after they've collapsed (unless they collapsed because the need itself doesn't exist anymore) so existing companies grow or new companies pop-up to serve it.
It seems to me that companies that have replaced workers with AI are by far the most likely to by now not actually be helping the Economy, not even indirectly, and that their dissapearance might actually improve the Economy if only because their share of the Market might be taken over by companies with better far better and less wasteful management (and hence more efficient) and which employ more people, and hence which bring more benefits to the broader Economy.