In world history, the vast majority of abundance is downstream of conquest, not innovation. Plunder makes profit. Even in weird moments like today, where innovation is (or, at least, was) genuinely the driving force of abundance, that innovation would not have come about without the seed capital of Europe plundering Africa and the Americas.
Abundance isn't even the right framing. What most people actually want and need is a certain amount of resources - after which their needs are satiated and they move onto other endeavors. It's the elites that want abundance - i.e. infinite growth forever. The history of early agriculture is marked by hunter-gatherers outgrowing their natural limits, transitioning to farming, and then people figuring out that it's really fucking easy to just steal what others grow. Abundance came from making farmers overproduce to feed an unproductive elite. Subsistence farming gave way to farming practices that overtaxed the soil or risked crop failure.
The history of technology had, up until recently, bucked this trend. Computers got better and cheaper every 18 months because we had the time and money to exploit electricity and lithography to produce smaller computers that used less energy. This is abundance from innovation. The problem is, most people don't want abundance; the most gluttonous need for computational power can be satisfied with a $5000 gaming rig. So the tech industry has been dealing with declining demand, first with personal computers and then with smartphones.
AI fixes this problem, by being an endless demand for more and more compute with the economic returns to show for it. When AI people were talking about abundance, they were primarily telling their shareholders: We will build a machine that will make us kings of the new economy, and your equity shares will grant you seats in the new nobility. In this new economy, labor doesn't matter. We can automate away the entire working and middle classes, up to and including letting the new nobles hunt them down from helicopters for sport.
Ok, that's hyperbole. But assuming the AI bubble doesn't pop, I will agree that affordable CPUs are next on the chopping block. If that happens, modular / open computing is dead. The least restrictive computing environment normal people can afford will be a Macbook, solely because Apple has so much market power from iPhones that they can afford to keep the Mac around for vanity. We will get the dystopia RMS warned about, not from despotic control over computing, but from the fact that nobody will be able to afford to own their own computer anymore. Because abundance is very, very expensive.