You do realize that it is probably inevitable that eventually everybody will speak the same language?  Globalization is only hastening that process, it will probably be English because English is the most plastic language there is.

Right: French yesterday, English today, tomorrow ... Chinese?

No, because written Chinese is so hard to introduce new words too.  The inevitable failure of a pictographic written language.  It is only not French today because the French imploded in 1789.