There are not alternatives. I recommend you look at Google Loon before citing it as an actively running alternative in India.
For the people who use Internet.org, there are literally no other ways to get online.
The problem with internet.org is it redefines "Internet" and "online" to mean "Facebook" and "Facebook". That is not the Internet, and the only thing truly "online" about it is the totally unencrypted and tracked browsing habits of the people. No number of token good-will sites or pay-to-play business sites will ever make this initiative the "Internet", and the wall of global segregation grows ever higher.
It's that, or literally nothing.
Not necessarily. If the internet.org initiative was truly noble, they could provide bandwidth-limited access to all of the Internet, along with an optional service or browser addon that formats pages for text-only viewing to save even more bandwidth.
Sure, but they don't, so it's either what they currently offer or nothing.