The share of homemade food we carry has fallen from 100 percent to around 60 percent, and we expect that number to keep dropping," he told AFP.
Dabbawallahs, literally meaning "box carriers", have been plying Mumbai's streets for well over a century.
They featured in the hit 2013 Indian film "The Lunchbox" centring on the story of a wife whose home-cooked meals were collected by a dabbawallah and then delivered, incorrectly, to a stranger's office rather her husband's.
But now many of the meals inside the tin containers that clatter against each other as they hang from the dabbawallahs' rickety bicycles are handpicked on the Internet by busy professionals enjoying a wealth of choice.