Earlier quoted context omitted.
I'll disagree. I worked previously "somewhere" that had yearly budget of tens of millions of dollars in order to tackle this specific issue - bringing internet to people that do not have it. We had extremely good data, most of which not available publicly; dozen(s) of people working solely on identifying scope of problem while other people trying to come up with solutions. I don't have the data anymore so I can argue…
I understand and maybe 2.5 Bn might be under question. But lets just to narrow it down to one country - US. One of the worlds strongest economy. Only in the US more than 3 million families with school-aged children can't afford internet connection (Sprint claims it's 5 Mio families) That's why these programs exist: http://1millionproject.org/ , https://www.internetessentials.com/ , https://www.fcc.gov/general/lifelin…
Will play devils advocate a bit: there is a lot of projects that attempt sponsoring model. Why one should choose yours over, lets say, this one https://www.worldvision.org/sponsor-a-child-in-africa .