>Technology firms such as Google and Facebook are working on projects to offer free internet to parts of Africa and India.

Um, no. Facebook is not offering free internet. They are offering "Facebook internet", where website maintainers must abide to their guidelines in order to be part of the internet that they offer.

More on the atrocious limitations that they're imposing is outlined here: https://info.internet.org/story/platform

There has been a lot of traction in the news about this too, so it's worth reading about this before labelling it as "free internet": https://www.google.com/search?tbm=nws&q="free+basics"