The Parsis, like the Jews and the Chinese, are not a native ethnic group of the society where they have strong influence, having come from Persia into India. (While they do share some genetic and cultural heritage, it would still be like a group of Armenians settling and wielding much control over the economy in Ireland.) They also came to their high status gradually through greater intelligence and industriousness, not through force. And they have been living in their host society for hundreds of years—plenty of time for the seeds of envy and rioting to have been sown.
And yet, there has been no history of pogroms against the Parsis. If anything, they’re seen as more of a national treasure.
Apparently the reason is that they’re very generous.