> can't company B hire the same workers and compete harder with these new extra productive workers they hired

How much of the current tech world is actually about competing based on innovation/quality/merit? I'd wager not much. The circular big AI deals we're used to seeing now are not a new thing - that shit has been the standard playbook for VCs and their startups for a long time. That being said, I don't see why a bunch of these swampy tech companies could not be easily outcompeted on the tech/product quality side.