If it happens on sufficiently large scale, the practice of tweaking quality in lieu of price could play havoc with essential economic data. Statistical agencies do their best to account for changing product quality, but if adjustments are unexpectedly common or subtle then muted inflation figures could easily be concealing a more turbulent economic picture. Central banks watching for big swings in inflation or wage growth as a sign of trouble could be reacting to figures that bear far less relation to business conditions than they used to.
Cut-price economics － The Economist August 10th 2019 消費財の価格メカニズム
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