There are multiple companies that were born to solve specific internet's infrastructural problems (e.g. Equinix, Akamai). Looking at the way internet usage has evolved, what kind of infra challenges do we have to face (now or future)?
[books/papers suggestions are welcome!]
The ITU made a high frontier claim that was their core mission in the 10-20 year window. They made this claim 10 years ago. I'm not seeing strong evidence its being solved, aside from trickle down re-purposing of old 3G systems and Chinese investment in not-very-good infra to offset their coltan mining in Africa.
An accquaintance lives 10km outside metro Bangkok. It's an amazing city and its as plugged in and switched on as anywhere else in Asia, the rats nest of wires is a testament to ad-hock hackery. 10km outside the city margins, its a dead zone for high speed service. And Thailand has a huge rural population.
Rinse and repeat for Africa.