There were many lingua francas of which French was supposedly the first global lingua franca. That changed and it became English (from what I understand). We will probably see another language become the lingua franca, so my question is: should it be English? Are there better candidates out there? Why / why not?
Germany, Spain, and France didn’t get it done in the 70 some years since the WWII, so my estimation of that changing is quite low. I think France is too chauvinistic to accept German due to its history and what the language sounds like. Spanish and French are too similar and France would again consider its language superior once again 😅
It could be done with heavy investments in education across the EU. It would have to be for all citizens and not just schools for <20. Adding it to every EU country’s list of national languages would also help adoption, as government media would have to be broadcast in them all. If the EU were serious, it could happen within 20 years, I reckon.