Readers who follow Cory Doctorows (@pluralistic@mamot.fr ) writings will be familiar with the points he discusses in this book. But even for those this will be an interesting read since he builds his arguments well. First presenting the problem, then the causes and ending with possible directions to regain our digital space. He argues that we have conceded control over our digital lives to a group of oligarchs and competitive compatibility offers us a way out. Competitive compatibility is a way to even the playing field so that not just the big platforms can monopolise out digital space but that it is open for citizens and (small) businesses alike. A level playing field which has resulted in the digital revolution in the past but which we should retake by seizing the means of computation.