Hello Goanetters, It can also be due to the English speaking culture of Goans. Unlike other communities, they linger to their mother tongues, like the Sikhs, Keralites, Tamils irrespective of how many years they have stayed in the foreign land, but us Goans, adopt English as our lingua Franca, and very soon learn other languages in their adoptive countries. As Bernardo says, they melt in any community. Very rarely using Konkani.
Cheers Jerry Fernandes