VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Wednesday, December 31, 2025

Stock Comparison

Enbridge Inc. vs Intuitive Surgical, Inc.

Compare moat strength, market structure, and segment coverage to understand how each company defends its edge.

Enbridge Inc.

ENB · Toronto Stock Exchange

Market cap (USD)$104.9B
SectorEnergy
CountryCA
Data as of2025-12-31
Moat score
92/ 100

Weighted average of segment moat scores, combining moat strength, durability, confidence, market structure, pricing power, and market share.

Full stock profile

Dive deeper into Enbridge Inc.'s moat claims, evidence, and risks.

View ENB analysis

Intuitive Surgical, Inc.

ISRG · NASDAQ

Market cap (USD)
SectorHealthcare
CountryUS
Data as of2025-12-30
Moat score
83/ 100

Weighted average of segment moat scores, combining moat strength, durability, confidence, market structure, pricing power, and market share.

Full stock profile

Dive deeper into Intuitive Surgical, Inc.'s moat claims, evidence, and risks.

View ISRG analysis

Comparison highlights

  • Moat score gap: Enbridge Inc. leads (92 / 100 vs 83 / 100 for Intuitive Surgical, Inc.).
  • Segment focus: Enbridge Inc. has 4 segments (72.8% in Liquids Pipelines); Intuitive Surgical, Inc. has 3 segments (60.8% in Instruments and Accessories).
  • Primary market structure: Oligopoly vs Monopoly. Pricing power: Moderate vs Strong.
  • Moat breadth: Enbridge Inc. has 6 moat types across 3 domains; Intuitive Surgical, Inc. has 9 across 4.

Primary market context

Enbridge Inc.

Liquids Pipelines

Market

Crude oil & liquids pipeline transportation plus terminals/storage

Geography

North America (Canada & U.S.)

Customer

Producers, refiners, marketers (shippers)

Role

Midstream pipeline operator

Revenue share

72.8%

Intuitive Surgical, Inc.

Instruments and Accessories

Market

Proprietary robotic surgery instruments, accessories, and consumables used per procedure on the da Vinci (and Ion) installed base

Geography

Global

Customer

Hospitals and surgery centers purchasing consumables; surgeons and OR teams as end users

Role

Consumables OEM within proprietary platform

Revenue share

60.8%

Side-by-side metrics

Enbridge Inc.
Intuitive Surgical, Inc.
Ticker / Exchange
ENB - Toronto Stock Exchange
ISRG - NASDAQ
Market cap (USD)
$104.9B
n/a
Sector
Energy
Healthcare
HQ country
CA
US
Primary segment
Liquids Pipelines
Instruments and Accessories
Market structure
Oligopoly
Monopoly
Market share
29%-31% (reported)
n/a
HHI estimate
n/a
n/a
Pricing power
Moderate
Strong
Moat score
92 / 100
83 / 100
Moat domains
Legal, Supply, Demand
Supply, Demand, Network, Legal
Last update
2025-12-31
2025-12-30

Moat coverage

Shared moat types

Long Term ContractsCapex Knowhow Scale

Enbridge Inc. strengths

Permits Rights Of WayPhysical Network DensityRegulated Standards PipeConcession License

Intuitive Surgical, Inc. strengths

Training Org Change CostsEcosystem ComplementsProcurement InertiaInstalled Base ConsumablesIP Choke PointService Field NetworkData Workflow Lockin

Segment mix

Enbridge Inc. segments

Full profile >

Liquids Pipelines

Oligopoly

72.8%

Gas Transmission and Midstream

Oligopoly

11.8%

Gas Distribution and Storage

Monopoly

14.4%

Renewable Power Generation

Competitive

1%

Intuitive Surgical, Inc. segments

Full profile >

Systems

Quasi-Monopoly

23.5%

Instruments and Accessories

Monopoly

60.8%

Services

Monopoly

15.6%

Want the full wide moat stocks list?

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Curation & Accuracy

This directory blends AI‑assisted discovery with human curation. Entries are reviewed, edited, and organized with the goal of expanding coverage and sharpening quality over time. Your feedback helps steer improvements (because no single human can capture everything all at once).

Details change. Pricing, features, and availability may be incomplete or out of date. Treat listings as a starting point and verify on the provider’s site before making decisions. If you spot an error or a gap, send a quick note and I’ll adjust.