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?
English is mostly used in commercial now, changing it would be costly and you would need the commitment of many others people to accept a new change in how to approach the world or just Europe, it’s a tipe of commitment I doubt people would be willingly to accept.