---
id: "ext-porter-generic-strategies"
type: "external-framework"
source: "Enrichment overlay — adjacent literature (Michael Porter, Competitive Strategy)"
source_timestamps: ["Enrichment: Adjacent Literature", "Enrichment: Counter-Perspectives"]
tags: ["external-framework", "strategy", "porter"]
related: ["concept-commodity-specialty-spectrum", "concept-competitor-centric-strategy", "claim-serving-everyone-fails", "concept-precision-efficiency"]
sources: ["tail1"]
sourceVaultSlug: "hbr-seg-tail1"
originDay: 1
articleStem: "hbr-tail-117-middle-market"
sourceUrl: "https://hbr.org/2026/03/why-companies-dont-compete-in-the-middle-market"
sourceTitle: "Why Companies Don’t Compete in the Middle Market"
---
# Porter's Generic Strategies & 'Stuck in the Middle'

**Not from the source — external grounding from the enrichment overlay.**

Michael Porter's *Competitive Strategy* defines three **generic strategies**: **cost leadership**, **differentiation**, and **focus**. Porter warns that firms that fail to commit to one clear strategy — trying to be both low-cost and differentiated — end up **'stuck in the middle'** with no clear value proposition.

**Relation to the source:** This is the direct antecedent of the author's thesis. The commodity end of the [[concept-commodity-specialty-spectrum]] ≈ cost leadership; the specialty end ≈ differentiation; and [[claim-serving-everyone-fails]] restates 'stuck in the middle' for the digital age. The source's contribution is arguing that *data ubiquity* makes the middle newly and structurally fatal, whereas Porter framed it as a strategic choice. Also nuances [[concept-competitor-centric-strategy]] and [[concept-precision-efficiency]].