While the immediate interactivity of these old systems was technically limited, the way that people thought about them was more flexible than you might expect. Try reading https://www.theatlantic.com/magazine/archive/1945/07/as-we-m.... Written in the waning days of WW 2 (Germany had surrendered, Japan had not), it is the first recorded proposal of hypertext. The vision described is extremely interactive.

Interestingly, it is also the original description of the science citation index. When this was later combined with hypertext, the result was Google's PageRank system...

Now how could someone in 1945 be that visionary about how computers could be used some day? Well you see, he'd been in computers for nearly 20 years, and had been thinking about this system off and on for around a decade, in between real jobs like being in charge of R&D for the USA during WW 2...

If you fast forward to the 1960s, everyone should watch the Mother of all Demos. That was possible in 1968. In some ways it was better integrated than what we put up with today...