I just finished reading Zuboff's book. It's not an easy read--the writing is good but I found it conceptually difficult at times, as it draws on ideas from history, political economy, philosophy and social psychology to analyze a phenomenon that it barely emerging. Put briefly, capitalism is entering a new phase, one in which human behavior is continuously monitored, influenced and ultimately controlled by enterprises that are accountable to nobody. If surveillance capitalism is carried to its logical conclusion, democracy, freedom and human dignity are all at risk.
I'm not sure this book will appeal to everyone--if you didn't like (or couldn't get through) Piketty's Capital in the Twenty-First Century, you probably won't like this one--at 700 pages, they are both of equal heft. But, IMO, they both deserve to be called important books, warnings that we ignore at our own peril.