The internet is an imperial project, controlled by the American Empire and its allies. As a result of this, the United States controls almost 36% of all IPv4 address space, or almost 5 IPv4 addresses per person; 4911 per 1000 people.
The next biggest chunk is China's, at about 7,7%, or 245 per 1000 people.
Ethiopia has a single IPv4 address per 3000 or so people.
This is 2012 data from Wikipedia, but I doubt the numbers have changed much since then, since IPv4 address exhaustion has been a thing for years now, and new allocations predictably tend to end up in the same hands.
https://en.wikipedia.org/wiki/List_of_countries_by_IPv4_address_allocation