What about the world international airliners? I was told that more than 50% of them will be chinese (registered) by 2025... What about now? Probabely that more than 80% are not N- already. Just a wild guess, I don't have the numbers.
Of course I have no problem with a N- C150 doing touch and goes in Flint or Casper city using english on the radio, but I don't think that is the point.