English is a germanic language. You say "gut" instead of "good", "zu" instead of "to", "wir" instead of "we", "Wetter" instead of "Weather", "nichts zu tun" instead of "nothing to do".
You will not be doing as much effort as someone from a totally different native language. The CIA calculated that it requires over 4 times the effort to learn Chinese for an English speaker than learning French. It also applies back, a Chinese will find it very hard to learn proper English.
Learning English for a german student is as easy as taking the train and spending some days in England.
Now for most Chinese, or even Indian(they have more than 20 languages) people, or Arabic,it is not so easy.
The fact is that they are in a disadvantage,not in a leveled field and they don't like it.
They are the majority of the population in the world, so if they develop their economies they will force everybody else to learn their native language, not the other way around.