> I realize that Africa is an enormous continent; I'm just curious if this doesn't also help out developers and startups in places like Nigeria...? I don't have a sense of the topology of the Internet throughout Africa vs particular African nations and the rest of the world.

It probably doesn't help developers in Nigeria get lower latency or cheaper access to AWS, but it may help them get more customers more quickly, as some other obvious markets that might be a better fit for services they develop would benefit from the region in South Africa.

However, it is quite expensive to operate data centres in Nigeria (as the electrical supply is not very reliable; I know that at least quite recently many DCs there need to run on generator about 10% of the time, I don't know if that has changed since).

There are, however, some initiatives to get more international intra-continental peering going (e.g. I believe at present most traffic between Nigeria and South Africa transits London).