this is a pretty fascinating question. Yes, they definitely wouldn't be able to create say Intel fabs, since the "market" cannot sustain it. But, being a very adaptable species, could they gracefully scale down the tech to keep making what's needed for survival? It's similar to time travel, if you got dropped into the middle ages, would your knowledge be useful to them? here it's like the reverse: having seen everything in an advanced civilization, can a resource-constrained team pick out and keep the most important core?
Not for long I guess. Maintaining advanced hardware is hard because it sits on top of a technological pyramid, and the next layer is also advanced hardware, which sits on top of a… you get the idea.
I think that it could be possible for them to focus on few important/key paths, in theory. But, unless they research and prepare for exactly that scenario and chances that it works would be strictly in their favor and they all would work hard, learn hard and motivate themselves through their entire life, I don’t see how it could work. Not to mention political, social, religious risks with the next generation.
I’m not 100% sure ofc, that would be no doubt an interesting “experiment”.
