---
id: "prereq-michael-porter-strategy"
type: "prerequisite"
source_timestamps: ["§ Transforming Moats", "§ Opportunities"]
tags: ["strategy", "business-theory"]
related: ["concept-competitive-moats", "contrarian-operational-effectiveness"]
reason: "Required to understand the significance of 'moats' and why the author's claim about operational effectiveness is a major departure from traditional business theory."
sources: ["futures"]
sourceVaultSlug: "hbr-seg-futures"
originDay: 2
articleStem: "hbr-nm-99-genai-end-incumbent-advantage"
sourceUrl: "https://hbr.org/2024/11/could-gen-ai-end-incumbent-firms-competitive-advantage"
sourceTitle: "Could Gen AI End Incumbent Firms’ Competitive Advantage?"
---
# Michael Porter's Competitive Strategy

**Prerequisite.** The author's entire framing relies on classical business strategy, specifically **Michael Porter's** theories on competitive advantage, barriers to entry, and the distinction between *strategy* and *operational effectiveness*. Porter famously argued in *"What Is Strategy?"* that **"operational effectiveness is not strategy"** — best practices diffuse and are easily imitated, so doing the same things better is not a sustainable advantage.

**Why it matters here.** Without this background, the significance of [[concept-competitive-moats|moats]] is lost, and — crucially — the author's claim in [[contrarian-operational-effectiveness]] that operational effectiveness will *become* a moat loses its contrarian force. This prerequisite is the intellectual backdrop against which the essay's sharpest reversal is staged.