Second, the assumption of one additional percent of growth over a 15-year period possibly overestimates the effect in the early years, but underestimates to a far greater degree in later years when the economy is larger, the penetration is higher and the network effect is greater.

FORBES: Two Technologies Propelling India Forward

First, though the average penetration of all of India is 80 percent, higher-income pockets are likely to have higher penetration and thus a greater growth-boosting effect on larger incomes.

FORBES: Two Technologies Propelling India Forward

The second-order effect of all this cheap gear is rapid Net penetration into poorer countries like India and China, which are becoming vendors of even cheaper products and services.

FORBES: Digital Rules