Scale Economics in Claims & ReinsuranceNarrow moat

The clearest place PZU's dominance turns into money is the plumbing customers never see: claims handling and reinsurance. Every insurer must run an expensive apparatus to investigate, adjudicate, and pay claims, and to hold and manage regulatory capital. Those are largely fixed costs, and spreading them across the largest premium base in Poland gives PZU a lower expense ratio than a sub-scale rival can achieve — the low-cost-producer advantage expressed as a hard number on the income statement.

Reinsurance is the subtler edge. No insurer keeps all its risk; it cedes the tail — the catastrophic hail, flood, or concentration of losses — to reinsurers. Because PZU brings a huge, diversified book to that negotiation, it retains more risk profitably on its own balance sheet and buys protection for the rest on better terms than a small insurer who must cede more and pay up for it. Scale, in other words, lets PZU keep more of the premium it collects and give away less of the margin — the quiet arithmetic by which the biggest insurer stays the most profitable one — a 20%-plus return on equity in a commodity industry¹.