Software Margins

What this topic is

Software has a huge fixed cost to build and a near-zero cost to deliver each additional copy (its marginal cost). Once built, serving one more user costs almost nothing, so revenue turns into profit at scale — which is why software gross margins commonly reach 70–90%+.

Why it matters

Near-zero marginal cost is the hidden engine behind software's extraordinary profitability and scalability — and behind why software has eaten so much of the economy. It explains why software companies are valued so highly, why they can invest so aggressively, and why "software margins" are the gold standard other industries envy.

Who should learn it

Anyone building or investing in software — and anyone trying to understand why a software business scales so differently (and so much more profitably) than a physical one.

What you will understand

• See why the cost of the next copy drives everything
• Understand how near-zero marginal cost creates 70–90% margins
• Know why software scales so much more profitably than physical goods
• Recognize the limits — the costs software still has

Prerequisites

• Brand Moats
• Network Effects

Common misconception

"Software is expensive to make, so it should have normal margins." The cost of software is almost entirely up front — building it once. Each additional copy costs almost nothing, so as users grow, that fixed cost spreads to nothing and margins soar toward 70–90%+. It's not that software is cheap to build; it's that it's nearly free to duplicate.