The Category That Was Removed: Scoring the Airline Cluster Six Months On
Article 35 of this catalog was published on July 5, 2026, two months after Spirit Airlines liquidated and while the failure cluster was still accumulating. It made one central causal claim — that the Hormuz lag documented in Article 26 had arrived at the airline profit and loss statement, and that fuel was the mechanism converting a sector of chronically thin-margin operators into a sequence of insolvencies. Six months later that reading is the consensus explanation, stated in the trade coverage without qualification, and this essay scores it as such rather than leaving it assumed. At least eight further carriers have failed since, including Flybondi, the second-largest airline in Argentina, which suspended all operations in August and filed for creditor protection in October against liabilities of roughly 120 million dollars. But the more consequential development is structural rather than additive. The cluster did not merely remove firms. It removed a competitive category. Five low-cost carriers now remain in the United States, Southwest and JetBlue have both migrated to hybrid models, and industry observers report that legacy carriers learned from Spirit's collapse how to fend off the segment entirely — a pattern with a direct precedent in Delta's Song and United's Ted, both of which died within several years of an earlier fuel spike. This essay argues that the sorting mechanism is the same one Article 62 identified in two national housing markets: exposure to a cost shock is determined by the duration of the obligation that absorbs it. For a household that is the mortgage term. For an airline it is the fuel hedge. The carriers that died were the ones whose input costs repriced continuously, which is a structural property of the ultra-low-cost model rather than a failure of management.