No, that’s not what I’m saying.
VLSI is one of, if not the, the most complex area of engineering today, that does not only bring together numerous separate domains of technology, but it requires the best of each.
You’re basically talking about taking the best of the best we have, scale it down, and make it affordable.
Let’s move on to the point that you think decides it:
Because it really is. Just think about it. We’re at the level where we can probably replicate the first generation of integrated circuits at home. That’s many decades after they were first manufactured at scale.
I’m not arguing that producing today’s VLSI will not be available for the home user to manufacture in 2080, I’m arguing that at no time in history will the latest tech at the time will be available for the random guy to manufacture at home.
Manufacturing cutting edge tech is always prohibitively expensive for all but the largest players. I’ve already brought plenty of examples to illustrate why it is true for this particular field. If it’s not already blatantly obvious then I don’t know what else to say.
TL;DR Manufacturing integrated circuits at home is indeed possible. It’s up for debate whether people will abandon their 2018 gadgets for something at the level of the 60s.