Ask HN: Indian Internet users to double by 2021. What does it mean for business?

As per Cisco Report[1], the internet users in india would double to 829M users. With large population coming online from rural population.

What does it mean for the internet companies, which kinds would experience huge growth opportunities, new markets?

[1] http://www.livemint.com/Politics/JVpolcuJeBBoZyR4nAbd2I/Internet-users-to-double-to-829-million-by-2021-in-India-Re.html