>>That's more data than most will use in a single day.

Not to take away anything from your point.

But I see plenty of cab drivers watch movies, youtube and use other services like Google maps.

But there are other inspiring stories. A few months back I saw a video of street flute seller who learned to play the flute through the internet. Here is one story of a Coolie who prepared for civil services exams using internet: https://www.deccanchronicle.com/nation/current-affairs/08051...

You will see plenty of stories where people are using internet to do something of value.

In the UK I have do all that on a a VDSL connection capped to 120GB per month and at four times the price.

Why did you choose a capped VDSL connection, then? Unlike the US, we have real uncapped plans. As for price... go visit India and see if you can work out why people might not be able to pay as much for services, and why it might be possible to provide those services cheaper. Hint - people don’t get paid as much.

That's only part of the story, India greatly benefits from population density in urban areas.