A basic Kontextmaschine rule of thumb for predicting the future is expect a straight-line projection of no trend to hold for more than 7 years
You will notice how many good science fiction novels, however, are essentially "imagine this modern trend continuing on straight-line projection for 30-100 years"
Science fiction author David Brin said that the hardest type of SF to write is medium term 50-100 years in the future. Because for far future scifi you can make up any old thing and world build basically from scratch. For near future scifi, you’re just positing our current world with maybe one major change. But fifty years from now? *Some* things will have changed vastly, and some won’t have changed at all, and you’re likely to get which it is, wrong. Consider the authors in the sixties writing about the twenty-teens. They predict flying cars and basically the same telecommunications infrastructure.
Anyway, you should read his book “Earth” which is what the world looks like fifty years after the invention of the internet.
Where they’re batting black holes around the earth’s core with gravity lasers? I remember that one, one of my favorites, second only to John Varley’s Steel Beach