Do you think that this will still be the case now that we have the internet? I wonder if the English of 3000 AD will be as different from 2000 AD as 2000 AD is from 1000 AD. I feel like the big players in tech have the capability to direct language evolution somewhat. Consider the pronunciation feature Google offers if you look up the definition of a word (the little speaker icon) -- the pronunciation they provide there could influence learners. I'm not suggesting anything insidious, just recognizing the potential that seems to be there.