Book Summary
Published in 2017, The Four, subtitled The Hidden DNA of Amazon, Apple, Facebook, and Google, argues that four technology companies have become the most influential businesses on the planet, and that they share a common pattern. Scott Galloway, a professor of marketing at New York University, contends that these companies dominate not by accident but because they combine the same ingredients: enormous scale, vast troves of data, platform business models that get stronger as they grow, and brands that command unusual loyalty. Just about everyone thinks they know how these companies got there, he writes. Just about everyone is wrong.
The book devotes a chapter to each company. Amazon wins on logistics, selection, and a relentless focus on the customer, subsidizing thin retail margins with a lucrative cloud business. Apple wins on brand and design, charging premium prices for products that function as identity. Facebook, now Meta, wins on attention, turning human connection into the most valuable advertising inventory ever assembled. Google wins on data, answering questions so well that it became the front door to the internet. Brad Stone’s Amazon Unbound tells the Amazon story in far greater depth; Galloway’s contribution is the comparison, showing what the four companies have in common and why that common pattern matters.
The second half of the book turns to consequences. Galloway argues that the dominance of these companies has real costs: jobs displaced, privacy eroded, taxes avoided, and markets concentrated in ways that would once have drawn antitrust action. He closes with advice for readers navigating a world shaped by these giants, on careers, on building businesses in their shadow, and on what society should demand of companies this powerful. It is a business book with a polemical streak, written to provoke as much as to inform.
Who is Scott Galloway?
Scott Galloway is a professor of marketing at New York University’s Stern School of Business, a serial entrepreneur, and a public commentator on technology and business. He founded the digital intelligence firm L2, which studied how brands perform online, and has founded several other companies. His teaching and writing are known for bluntness: he favors strong claims, vivid comparisons, and conclusions stated without hedging, a style that has made him both popular and controversial.
Galloway is also a prolific author and podcaster, hosting the Prof G Pod podcast and writing a widely read newsletter on business and technology. His later book The Algebra of Wealth applies the same direct style to personal finance and career building. Readers who enjoy a confident, entertaining guide to big business will like him; readers who prefer careful qualification may find him exasperating. Either way, he is rarely boring.
Lessons From The Four
The first lesson is that scale and data compound. Each of these companies gets better as it gets bigger: more users mean more data, more data means better products, better products attract more users. This flywheel is why challengers struggle: they are not competing against a product, they are competing against a network that improves with every additional participant. For investors, the lesson is that platform businesses deserve a different valuation logic than ordinary companies, because their advantages widen rather than erode with size.
The second lesson is that brand and storytelling are as decisive as technology. Apple does not win on specifications alone; it wins because owning its products signals something about the owner. Amazon does not win on price alone; it wins because customers trust it to deliver, quickly and without friction. Galloway’s background is marketing, and the book is strongest when it shows how the great technology companies are also great marketing companies, shaping what people want rather than merely serving it.
The third lesson is that dominance invites backlash, and political risk is a real investment risk. Companies this large attract regulators, critics, and competitors, and their freedom to operate depends on public tolerance as much as on law. Galloway wrote before the major antitrust cases of the 2020s, but his warning holds: the same scale that makes these businesses formidable also makes them targets, and investors who ignore the political dimension of big tech are missing half the story.
Criticisms of the Book
Galloway’s style is the book’s greatest asset and its greatest liability. He writes to provoke, and some of his claims are stated more confidently than the evidence supports. Generalizations about entire companies, drawn from a handful of vivid examples, will frustrate readers who want nuance, and his predictions, like any pundit’s, have a mixed record. Read the book as an argument, not as a reference work, and check its bolder claims before relying on them.
The book is also, inevitably, a snapshot of 2017. Facebook has since rebranded as Meta and bet the company on virtual reality; TikTok has rearranged the attention economy; artificial intelligence has become the central strategic question for all four companies; and antitrust enforcement has moved from speculation to courtroom reality. The core analysis of platform power still holds, but the examples have aged, and readers should treat the book as a starting point for understanding big tech, not the last word.
Who is This Book For?
This book is for readers of business and technology who want a readable, opinionated tour of the companies that shape the modern economy, for investors in big tech who want to think harder about moats and political risk, and for entrepreneurs trying to build businesses in the shadow of giants. It is not a deep technical history of any one company, and readers who want that depth should go to the company-specific books. It is a book for people who like their business analysis with a point of view.
Final Thoughts
The Four remains a useful, entertaining introduction to the platform era, even where its details have aged. Galloway’s central insight, that a small number of companies now mediate commerce, communication, and attention for billions of people, and that this concentration has consequences nobody fully understands yet, has only grown more relevant since 2017. Read it, argue with it, and pay attention to what these companies do next: the story it tells is still being written.
