To Fight ‘Shrinkflation’ France Will Force Retailers to Warn Shoppers: Merchants will be required to put signs in front of all products that have been reduced in size without a corresponding price cut
They're not setting standard size scales for basic products or establishing price floors based on wholesale/production costs, much less intervening to increase supply or reduce overhead costs.
This is a bit like the surgeon generals warning on a pack of cigarettes. Nice, I guess. But hardly a game changer.