I think any 'foreign' demographic would be a rather big hit. I know plenty of folks who watch just one or two foreign language stations, because that's all that really cater to or interest them.
There's definitely been more movement in the space, but it's still really lacking. I can't imagine it would cost a ton to license most foreign content for the US, which they currently have 0 percent market share of.
Judging from the Netflix recommended videos and casting for Netflix originated shows, I'd say that goal has been achieved at this point.
You do have to wonder how overlooked Spanish speakers must feel. That's probably where the real money is in 'Netflix for xxx people'.