Saudi Arabia shuts one of the two lines that added 5 million barrels a day of Hormuz bypass

Diversifying suppliers is not the same as diversifying routes. Two-thirds of energy trade passes through maritime chokepoints, and one-third of it moves between partners who are not geopolitically aligned ^[10][11]. Subtract the first figure from the whole and about a third of energy trade avoids a chokepoint at all ^[1]. Ninety-five per cent of people live in a region that imports at least one major fuel ^[12]; about one person in twenty lives somewhere that imports none ^[2].

Fortune does not break out how much of the combined bypass volume the East-West line carried on its own, or say when it comes back ^[18]. The substitution elsewhere was measured: more than one barrel in five of seaborne oil traded in the second quarter moved differently than before the disruption ^[9]. Consumption fell, and flexibility absorbed part of the economic damage ^[7].

Input flexibility has to be paid for before anyone knows whether it will be needed. Reliance runs a refining complex that can process over 200 crude grades ^[14]. In Europe's 2022 gas shock, Yara cut ammonia production in Europe and supplied its fertilizer plants with ammonia produced elsewhere ^[15].

For a management team the cash question is what it costs to switch an input, and that gets settled before the disruption arrives. Fortune says no single measure absorbed the shock and that layers of resilience built over decades kicked in together ^[5], so a manufacturer funding extra feedstock inventory is paying full price for adaptation that traders, refiners and shipowners supplied collectively. Working capital sitting in a tank cannot be spent on the production line. In my view the closure of a buffer while the disruption is still being managed is the strongest available argument for holding the second option anyway, and it is a thinner body of evidence than the record of the system adapting.

The test is observable either way. If the East-West line returns quickly and third-quarter flows show no fresh rerouting, buffer depth was never the binding constraint, and firm-level redundancy is expensive insurance against a risk the market already intermediates. If the line stays shut and the remaining layers tighten, the companies that bought switchable inputs before the shock will be the ones paying less for their inputs.