It has, but not many have taken advantage of it. It is an incomprehensible leap in self-education that has happened for my generation. People used to read by reserving books in libraries and waiting for them to arrive, taking weeks or months now you can download them immediately, able to search them and find the relevant pieces. Similarly learning of all possible skills, programing cheif among them has never been as easy. These are real productivity boons, but the article seems to be asking something completely different, more like why haven't BigTech giant profits trickled down and the answer doesn't have much to do with productivity.