Speed up development of the concept of retro-futurism: Originally it was just futurism of the period, like most famously Jules Verne, then Golden Age of SF and Atomic Era. Things speed up with introduction of Cyberpunk genre, what was actual SF. Just in times where cyberspace was still something new and creators were abstract trying imagine it. What overlap with pollution and crime issue of the 80's. And quote fast genre start suffering on people confusing it with separate Future Punk genre, so stuff from Babilon AD/Judge Dred, what show dilapidated futuristic dystopia (the Punk in Cyberpunk refereed to anti-social character of the hero, not the Punk stylistic like in Future Punk). Anyway. When Cyberpunk proper moved from themes of unavoidable social collapse and actually start talking about actual cyberspace what start developing in the 90's. What is related to the Hacker Culture. Well, those two vision of didn't align, leading to development of new genre what is neo-Cyberpunk or more commonly known now as post-Cyberpunk (in reference to fact that in the end many of rebellious hackers become heads of tech companies). Point is that when people start realized dated nature of classic Cyberpunk, but refused to fallow to more "boring" modern interpretations. They start applying same rule to the older styles of retro-Futurism in so called retro-punk genres (the punk part become basically meaningless at this point). Especially coming back to the Steam Era. Though other genres also get noteworthy examples like Fallout. Meanwhile while popular Sci-Fi still refuse to acknowledge implications of Cyberpunk, beside AI rebellion (even if AI become integral part of our life's) what lead to hilarious cases of people in SF being less tech-savvy then our kids. The current focus is not on cybernetic but on ecology in Solar Punk genre, even if it also suffer on inability to properly showcase real life issue of pseudo-ecology and green terror. To be clear I'm not against ecology, but in many cases fake green products, like electric cars are pushed by propaganda. Even if rotting car batteries are greater threat then burning oil. Or failed green politics destroying industry of advanced economies, while production migrate to countries ignoring regulations entirely (so the opposite effect as result of lack of common sense).

Basically, yeah

There is practical reason why idea died.

I guess Elon is a sub for this channel... then he does some rebranding work.

Prague actualy build a pneumatic mail system for the whole city (and much to the anoyance of subsequent german and soviet ocupation forces).

Ah, the Tim Traveler. Nice!