The outcome seems almost inevitably to be cancer. So does the outcome of extrapolation. Almost anything carried to its logical extreme becomes depressing, if not carcinogenic. Fortunately, though extrapolation is an element in science fiction, it isn't the name of the game by any means. It is far too rationalist and simplistic to satisfy the imaginative mind, whether the writer's or the reader's.
Variables are the spice of life.
This book is not extrapolative. If you like you can read it, and a lot of other science fiction, as a thought-experiment. Prediction is the business of prophets, clairvoyants, and futurologists. It is not the business of novelists. A novelist's business is lying.