But language WANTS might not be economically viable. For example in Scandinavia, Sami people (estimated population <100k) demanded all government interaction (documents, services, etc) to be translated in all their dialects (there are 11+ dialects, which are different in writing). Amount of work to be done to support that request would be astonishing.
Ironically the same true for French. There are 20+ very different dialects, is Quebec ready to work in all of them on government level? Or are we talking about le français standard?
So there is some practical limits to this, and so far EU is handling it's ok-ish. EU-wide systems are available in all official languages of all members, and minority languages are embraced when practical.