That's the problem with native lingua franca speakers. They don't have a foreign language that they really have to learn.

If you don't speak English people are mostly limited to their own country. German is worthless in France. So we all need to learn English, while you don't have a lot of benefit of actually learning other languages.

To show my point: My team at work is spread over most of Europe. We don't have an English native speaker in the team and there are maybe a small handful of them in the whole company. Still, we all speak English at work, because it's the only language everyone knows.