We allowed tech companies to have more money than entire countries by repealing the laws that forced them to reinvest their profits. They in turn bought out supplier’s entire stock of RAM to stifle their competition and eventually remove tech ownership from the lower classes. This has nothing to do with AI and everything to do with greed.

I can’t believe nobody said Star Trek. In the 70s you had reruns of the original series and the animated series short run. TMP didn’t come around until the end of the decade. I wasn’t there, but I imagine a 70s trekky would be damn grateful to have all the Trek we have today and they’d probably even love Academy (All the older not chronically online fans I know rave about it).

Edit: regardless of your personal opinion on nu trek, the answer fits the question. A trek fan from the 70s would be blown away by having 13 series and 14 movies available to watch on demand, plus books, games, etc.