We are not there, yet, but if AI could replace a sizable amount of workers, the economic system will be put to a very hard test. Moreover, companies could be less willing to pay for services that their internal AIs can handle or build from scratch. There will be fewer very large companies in terms of human size. There will be many more companies that are much smaller because you don't need as many workers to do the s…
Maybe, or 300 of those engineers will be working for 3 new companies while the other 600 struggle to find gainful employment, even after taking large pay cuts, as their skillsets are replaced rather than augmented. It’s way too early to call afaict
There are also plenty of ideas that aren't profitable with 2 salaries but is with 1. Many will be able to make those ideas happen with AI helping.