AFAIK Switzerland the real challenge there is to learn good English because you're expected to learn at least one of the other national languages before tackling it. I can't imagine that anyone attending a Swiss middle/high school would be denied the opportunity to learn German.
I suspect that lack of such knowledge could only be attained by choosing the "other" romanic language, i.e. learning Italian when from French-speaking Switzerland or French when from Ticino. Like Spanish pupils choosing Italian as a foreign language.
Knowledge of the national language is a prerequisite for being hired in many if not most countries. Any other choice will have side effects like having to conduct trainings in English even if that makes them less effective for the majority of participants whose first language isn't English, people not understanding non-operational company mailings, having difficulty dealing with HR, etc.