---
id: "entity-mci"
type: "entity"
source_timestamps: ["¶18"]
tags: ["historical-case-study", "telecommunications"]
related: ["claim-competitive-position-dictates-default", "contrarian-challengers-should-not-copy"]
entityType: "organization"
canonicalName: "MCI Communications"
aliases: ["MCI", "MCI Communications", "WorldCom"]
url: "https://en.wikipedia.org/wiki/MCI_Communications"
sources: ["commercial"]
sourceVaultSlug: "hbr-seg-commercial"
originDay: 5
articleStem: "hbr-tier2-08-subscription-auto-renew"
sourceUrl: "https://hbr.org/2026/05/should-your-subscription-business-use-auto-renew"
sourceTitle: "Should Your Subscription Business Use Auto-Renew?"
---
# MCI

**MCI** was a telecommunications challenger in the 1990s that successfully grew its long-distance market share from **4.5% to 20%** by using front-loaded promotions to acquire AT&T's customers.

**Relevance to this source:** MCI is the authors' historical proof that **challengers must run acquisition-focused strategies rather than copying incumbent retention playbooks** ([[contrarian-challengers-should-not-copy]], [[claim-competitive-position-dictates-default]]). It uses simpler plans and aggressive, front-loaded promotions to lower switching barriers — the telecom analogue of a challenger choosing **auto-cancel** to make trial risk-free. Captured in [[quote-copying-incumbent-error]].

**Canonical URL (archival):** https://en.wikipedia.org/wiki/MCI_Communications