---
id: "framework-great-value-loop-eras"
type: "framework"
source_timestamps: ["§ The Great Value Loop", "¶7"]
tags: ["technology-history", "value-chain"]
related: ["concept-great-value-loop", "claim-ai-bottleneck-electricity", "entity-google", "entity-meta"]
steps: ["Era 1: Infrastructure — constraint was connectivity; Cisco and AT&T harvested value by controlling the pipes.", "\\\"Era 2: Attention — constraint was discovery; Google and Meta harvested value by organizing access to information", "products", "and people.\\\"", "\\\"Era 3: Intelligence — constraint was compute; OpenAI", "Anthropic", "and Nvidia harvested value from frontier models", "chips", "and AI infrastructure.\\\"", "\\\"Era 4: Energy & Physics — constraint is power; the bottleneck shifts from digital intelligence back into the physical world (electricity", "cooling", "land", "grid connections).\\\""]
sources: ["futures"]
sourceVaultSlug: "hbr-seg-futures"
originDay: 2
articleStem: "hbr-nm-101-energy-strategy-ai"
sourceUrl: "https://hbr.org/2026/06/your-company-needs-an-energy-strategy-for-ais-next-phase"
sourceTitle: "Your Company Needs an Energy Strategy for AI’s Next Phase"
---
# The Four Eras of the Great Value Loop

## What It Is
A historical taxonomy of how the primary constraint — and thus the locus of value capture — has shifted *downward* through the technology stack over the modern technological age. It is the concrete, datable instantiation of [[concept-great-value-loop]].

## The Four Eras
1. **Era 1 — Infrastructure.** Key constraint: **connectivity**. Firms like Cisco and AT&T harvested value by controlling the pipes.
2. **Era 2 — Attention.** Key constraint: **discovery**. Firms like [[entity-google-d2]] and [[entity-meta-d101]] harvested value by organizing access to information, products, and people.
3. **Era 3 — Intelligence.** Key constraint: **compute**. Firms like OpenAI, Anthropic, and Nvidia harvested value from frontier models, chips, and AI infrastructure.
4. **Era 4 — Energy & Physics.** Key constraint: **power**. The bottleneck shifts away from digital intelligence back into the physical world — electricity, cooling, land, and grid connections.

## Strategic Payload
Era 4 is the source's core assertion — the same claim as [[claim-ai-bottleneck-electricity]]. The framework's value is that it makes the shift feel *predictable* rather than surprising: value has always migrated to the newest scarce control point, and energy is simply the next one.