I think we have already seen what direct replacement by AI companies looks like, and it's not pretty. Want an image for an ad but you're too cheap for a designer? There's a chatbot for that. Want to represent yourself in court? There's a chatbot for that. Slopplications of that sort did capture some demand for services, hardest felt by writers/graphic designers because you can more easily get away with a steep drop in quality there (for a little while).
I don't believe a takeover of that sort can happen in more sophisticated cases. Critical knowledge in SW (speaking from my wheelhouse) isn't some guarded secret-burger-sauce-recipe kind of knowledge. It's vast amounts of knowledge, organized and made actionable through effort and built-up skills. It's not knowledge they would have to replicate, it's labour. And I don't think they can privacy-violation their way to replicate a domain-specific knowledge worker from a chat history.
I just don't think they're smart enough to make a dent in an actually competitive industry, no matter how much espionage they got.
They may throw some cash around and buy their way into a niche field that actually has a business model, but I don't see how the espionage potential would help them much. To break into a difficult domain based on that, you would need the smart humans who can tell you what you are looking at.
Maybe it would be possible if you assume competent shady management, that is willing to invest heavily in human capital and systematically violate every privacy policy in the world. I think that's just not how they operate.