Aon plc

AON ·Financial, Insurance Brokers, Ireland
Analysis Moat Score

Moat Score — Aon plc

Total Moat Score 18 / 30
Moat Factor Score Analysis
Intangible Assets Patents, trademarks, brand strength, or regulatory licenses that protect a company's products or services from being freely copied by competitors. 4 / 5 Aon has a globally recognized brand in risk and insurance advisory, deep specialty expertise (cyber, catastrophe modeling, executive risk), and proprietary data and analytics platforms that are hard for smaller brokers to replicate.
Cost Advantage A durable ability to produce goods or services more cheaply than competitors — through scale, unique access to cheap inputs, location, or process — that lets a company undercut rivals or out-earn them at the same price. 2 / 5 Scale provides some efficiency in placement and back-office operations, but Aon is a premium advisory firm rather than a low-cost operator, and rivals like Marsh McLennan operate at comparable scale.
Pricing Power The ability to raise prices without losing meaningful business, because the product or service is differentiated, mission-critical, or has few good substitutes. 3 / 5 Fee-based advisory relationships and specialty expertise support decent pricing power, though commission-based revenue is also exposed to broader insurance market pricing cycles that Aon does not control.
Network Effect The product or service becomes more valuable to every user as more people or organizations use it, making an established leader harder to displace. 2 / 5 Aon's scale gives it broader carrier relationships and richer proprietary risk data that improve its advisory value as it grows, a modest data/scale flywheel rather than a true multi-sided network effect.
Switching Costs The money, time, or operational disruption a customer would face switching to a competitor, which locks in existing customers and supports renewals. 3 / 5 Corporate clients typically retain brokers for multi-year relationships given the complexity of switching risk programs and RFP processes, creating meaningful but not insurmountable stickiness.
Efficient Scale A market that can only profitably support a small number of players, so incumbents face limited threat from new entrants even without other defenses. 4 / 5 Global insurance brokerage at the large-enterprise and specialty level is effectively an oligopoly dominated by Aon, Marsh McLennan, and a few others, with scale, talent, and carrier relationships forming real barriers to new entrants.