While there's some good food for thought in here, I want to quibble with a couple of things.
First, the Soviet Union didn't have a prior capitalist hierarchy; the whole reason for Leninism as such was that Russia was a feudal, agrarian society, which in Marx's theory had not progressed to the stage of capitalism and therefore could not progress to communism.
Second, food shortages and mass poverty did not end with the establishment of the Soviet Union; in fact, they became enormously worse. Even before being invaded by Germany in WWII, the Soviet system caused the Holodomor, a famine unprecedented in the history of the Ukraine.
Third, the internet has been around for 52 years, not less than 30. I've personally been using it for 29 years, and I can tell you that it already had a long history when I started using it. One of the founders of Y Combinator first became well-known as a result of breaking significant parts of the internet 33 years ago, an event which resulted in a criminal trial.
Fourth, the internet was the product of universities, although the universities were funded by ARPA. Rocket ships have a long evolution including not only militaries but also recreational fireworks, Tipu Sultan of Mysore, Tsiolkovsky, Goddard, the peaceful space agencies, H. G. Wells, and possibly Lagâri Hasan Çelebi.
Fifth, I don't think the argument is that the technology is necessarily produced by systems with freedom and equality, but that it is invented by them. This is somewhat dubious, but not as open-and-shut wrong as your misunderstanding of it. Goddard's rockets were put into mass production as the V2 in Nazi Germany using slave labor, but he invented them at WPI and Princeton. Tsiolkovsky lived in the Czar's Russia and then the USSR, and his daughter was arrested by the Czar's secret police, but he himself seems to have had considerable freedom to experiment with dirigibles and publish his research (but no slaves to build rockets for him), and indeed he was elected to the Socialist Academy.
I think we can make an excellent case that certain kinds of intellectual repression, whether grassroots or hierarchical, fall very heavily on the kinds of people who tend to invent things. William Kamkwamba's family thought he was insane, Galileo spent the last years of his life under house arrest, Newton was doing alchemical research that could have gotten him burned at the stake in Spain, Qin Shi Huang buried the Mohists alive, Giordano Bruno was in fact burned at the stake, and the repression of Lysenko's intellectual opposition was a major reason for the USSR's and PRC's economic troubles in the 01950s and 01960s.
Living in the so-called "global south" (a term which I have come to regard as useless for understanding the world system, if not actively counterproductive) I have to tell you that there's very little production of advanced technology going on here. But I live in Argentina, and the situation is different in different countries; Indonesia, Thailand, Vietnam, etc., have all done significant technical production for the world economy while in the grip of dictatorships, even though Argentina never has. But most countries don't. If tantalum cost ten times as much, we'd still have cellphones, and you probably wouldn't even be able to detect the price difference.