that seems like a strange analogy. they serve many markets (India is a major one for example). there is nothing which forbids them from serving alcohol to non-Muslim travelers.
And, depending on who you ask, for Muslims too. The prohibition is against rice wine, which most Muslims generalize to include all alcohol, but some interpret that to mean only rice wine, or only wine.
Yup. By passenger volume, Emirates serves more Indians than any other group.
That's not that surprising when you realize that Dubai, their headquarters, is 90% Asian (which is itself mostly South Asian).