Learning a language has nothing to do with "opportunities" nor "global marketplaces". This reduction of meaning is extremely trivial, if not ludicrous.
When you learn a language, what you gain first is the access to a a completely different culture, new ways to shape or to represent things, events, anything meaningful for us human beings.
You do not gain access to a new market, or rather, that only a secondary, very minor benefit, and only relevant for a minority of people. I did not learn English for those ridiculous reasons, but because I enjoyed English culture, English litteracy, English poetry, and so on. I did it because I felt CURIOUS about my environment, and also because we in Brittany we often feel much more closer to our cousins beyond the Channel (just a sail away) than the average French: once again, a culturally inherited trait.
Curiosity. And a light flavoring of Yeats, Eliot and Beckett (who happened to be a close friend and neighbour of my aunt).
Do you think that when people learn how to play a musical instrument, they do it only for utilitarian purposes, to gain access to "new markets"??