I do not agree with the author's analysis - the impact on supply and demand are enormous, and the 1% number does not matter.
Effectively, the wheat buyer in Egypt (and other importers) needs to pay high enough prices such that:
1. Industrial wheat consumers in Europe/US and elsewhere substitute wheat with other products, making more wheat available for exports.
2. Previously untapped stocks get exported instead of stored.
Is there enough wheat worldwide? Yes. The question is what price Egypt needs to pay to secure its supplies, and if Egypt can afford to pay that price.
More details for the interested:
Ukraine exports around 20 million tons of wheat each year. https://www.indexmundi.com/agriculture/?country=ua&commodity.... We have to assume that Russian wheat will continue to be exported - there is no way that countries like Egypt will sanction Russian wheat. In the worst case scenario Ukraine will not ship any wheat for a year due to port closures and destroyed infrastructure, so the world loses 20 million tons of wheat exports.
There are two ways to solve the issue - by increasing supply or rationing demand. High prices help with both.
Supply solution:
1. Increase physical supply: It is not easy to source this amount of wheat elsewhere, especially not within a year. Most wheat in the northern hemisphere was planted last fall, meaning higher prices will not trigger a supply response for 1.5 years. Argentinean and Australian farmers can still increase their wheat plantings, but this will not be exported until November 2022 at the earliest. At the same time, the Ukrainian exports are missing right now.
2. Draw down global wheat stocks: Higher prices can make previously uneconomical exports profitable, pulling wheat from every available storage. The backwardated futures curve that helps with that - it makes storing wheat uneconomical. Stocks everywhere will draw down further, which means that wheat prices will remain elevated and susceptible to any further supply shocks (bad weather).
Demand destruction:
High prices destroy demand for wheat. Human consumption is relatively inelastic, meaning higher prices have little impact on consumption (and catastrophic consequences). However, wheat is also fed to animals or used for ethanol production, where demand is more sensitive to prices.
Source: Working in wheat trading.