Probably not. They were not learning it for funsies, but because it was the business language. English took its place now. If English goes away, it will be replaced by a language by another dominant business power.
Still would be very valuable to be able to read works that shaped western civilization in their original language, since a lot of nuance is lost translating to English. Just see how many crazy readings of the Bible people have (american evangelicals particularly ) because English can’t express the original idea in Greek well enough.