Information is important
The internet is the easiest way to provide individuals with information, and in developing countries it's the slow pace of information's movement that causes some of the bottlenecks which does not allow the economy to grow to anywhere near its full potential.
So data connectivity is important but it requires at least $20 a month to maintain connectivity, that's $240 a year, not much considering that everything from information and knowledge to e-commerce can be enabled using this amount of cash. However, in most of the developing countries GDP per capita is around $500 to $1,000 a year, asking someone to spend 50% or 25% of their yearly income for better long term returns does not fly well. Internet access in one side and access to a stable electric source is also a variable that needs to be taken into account.
I am guessing in every region there would be pockets of the population that can afford and know the value of information, so if Facebook or Google can monetize these pockets to subsidize internet for the masses then it could work wonders. I wonder what the expected price would be to build one Solara drone.