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a16z.comWhy Software Is Eating the World
Essay

Why Software Is Eating the World

Key ideas

Writing as an investor in several companies named, Andreessen argues software firms are poised to take over large parts of the economy, and valuation debates miss the shift.

  1. 1

    Ask why the shift is happening now

    Andreessen argues the required technology has finally come together after decades: broadband reach, expected smartphone adoption and much cheaper infrastructure make it easy to launch a global software startup. The example given is a basic internet application whose monthly running cost fell about a hundredfold between 2000 and the time of writing.

  2. 2

    Expect software firms to disrupt many industries

    Andreessen goes through books, video, music, games, film, photography, marketing, telecom and recruiting, arguing in most that a software company now leads or is growing fastest. Borders handing its online business to Amazon is offered as perhaps the most dramatic case.

  3. 3

    Look for software inside physical industries

    Andreessen argues software is also taking over much of the value chain in cars, retail logistics, shipping, airlines, oil and gas, agriculture, finance and defense. In some industries, particularly those with a heavy real-world component, Andreessen sees this mainly as an opportunity for incumbents, while in many others new startups will invade. Health care and education are named as next, in Andreessen's view.

  4. 4

    Judge the business, not the bubble debate

    Andreessen says too much of the argument concerns financial valuation rather than the underlying value of the new companies, many of which Andreessen believes are real, defensible businesses. The essay discloses investments by Andreessen and Andreessen's firm in several companies it discusses, and it ends by saying that Andreessen's money is going this way.

  5. 5

    Expect it to be hard regardless

    Andreessen lists three challenges: building through economic headwinds, a shortage of skilled people alongside workers who may be stranded by disruption, and the need for new companies to prove their worth. Andreessen warns that building such a company in an established industry is very hard.

In Marc’s words

“My own theory is that we are in the middle of a dramatic and broad technological and economic shift in which software companies are poised to take over large swathes of the economy.”
Marc Andreessen·Why Software Is Eating the World·Read in context(opens the original in a new tab)
“Companies in every industry need to assume that a software revolution is coming.”
Marc Andreessen·Why Software Is Eating the World·Read in context(opens the original in a new tab)
“No one should expect building a new high-growth, software-powered company in an established industry to be easy. It's brutally difficult.”
Marc Andreessen·Why Software Is Eating the World·Read in context(opens the original in a new tab)

About this entry

Published
Aug 20, 2011
Publisher
a16z.com
Type
Essay
Language
English
Added
Nov 2, 2026
Source last checked
Nov 2, 2026

Cover photo of Marc Andreessen, not from this work: JD Lasica, CC BY 2.0, via Wikimedia Commons.

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