Emmanuel Macron will talk a lot about industry this week. But its ambition to re-industrialize reveals the extent of the disaster.

On Thursday, it will be a big rout at the Élysée. Friday, direction Dunkirk and the "valley of the battery" Monday, re-grand raout, in Versailles this time, for the now traditional Choose France summit. For its first edition in 2018, this typically Macronian meeting had slipped into the agenda of foreign bosses on their way to...