Futures that didn't happen

Isaac Asimov imagined that robota capable of being caretakers of humans would have come, along with colonization of space, by the turn of the century. Too bad he was thinking too far forward in I, Robot:

"Susan Calvin shrugged her shoulders, "Of course, he didn't. That was 1998. By 2002, we had invented the mobile speaking robot which, of course, made all the non-speaking models out of date, and which seemed to be the final straw as far as the non-robot elements were concerned. Most of the world governments banned robot use on Earth for any purpose other than scientific research between 2003 and 2007.""

Asimov's Bicentennial Timeline

Isaac Asimov thought logically in writing fiction, but could he have guessed that nearly 40 years later, the global population would have surpassed seven billion people.

　　It took time, but Andrew had time. In the first place, he did not wish to do anything till Paul had died in peace. With the death of the great-grandson of Sir, Andrew felt more nearly exposed to a hostile world and for that reason was all the more determined along the path he had chosen.

Asimov also took note of the corporate personhood movement that blurred the lines between individuals and collectives, and between man and machine. How can an immortal collective also be an individual, appreciating the same rights?

　　Yet he was not really alone. If a man had died, the firm of Feingold and Martin lived, for a corporation does not die any more than a robot does.

　　The firm had its directions and it followed them soullessly. By way of the trust and through the law firm, Andrew continued to be wealthy. In return for their own large annual retainer, Feingold and Martin involved themselves in the legal aspects of the new combustion chamber. But when the time came for Andrew to visit U.S. Robots and Mechanical Men Corporation, he did it alone. Once he had gone with Sir and once with Paul. This time, the third time, he was alone and manlike.

Toward the end of The Bicentennial Man, Asimov imagined that the Earth's population would have reached one billion, one hundred years or more from the story's beginning at the end of the 20th century.

　　U.S. Robots had changed. The actual production plant had been shifted to a large space station, as had grown to be the case with more and more industries. With them had gone many robots. The Earth itself was becoming park like, with its one-billion-person population stabilized and perhaps not more than thirty percent of its at-least-equally-large robot population independently brained.