Give it 200 years, the whole world will be speaking one fairly common language anyway, that or society will have collapsed and every village will go back to having it's own language.

On a more serious note I'm getting a little sick of people telling me I'll never learn Swiss German and there is no reason to learn it, and at the same time always using Swiss German when they are having conversations around me (but not directly to me), I think to some extent the Swiss want to hang onto their language / dialect just as a way to keep themselves seperate from all the foriegners they bring in to work for them.