>>212123569>>212123631The reason is that Indian culture is extremely endogamous. Even if few in the diaspora actually get an arranged marriage to a cousin at the age of ten, it colours their views on dating and even affects their more clustered geographic distribution, relative to other minorities like the Chinese.
The trouble is that an endogamous society can protect its women all it likes, but that is only one component of ethnic shift. As in the case of Sicilians in the US, eventually the lines fray and blur to the point that the two groups start to blend and ingroup preference loses its ability to protect 'your' 'their' 'our' 'Indian' women as they become simply women.