“Remember the Minitel” could be the rallying cry of graying French political irritant Thierry Breton. The Minitel, those of a certain age will remember, was the ill-fated French riposte to CompuServe. It was run by the state subsidized France Télécom. Mr. Breton once served as CEO of the defunct telecom and now serves as the EU’s internal market commissioner. One of the things he has a penchant for doing in that capacity, apparently, is writing needling letters to Elon Musk.