Steem could be a life saver for many in developing countries. AND...this is not just in Africa. Asia, Eastern Europe, and many parts of South and Central America have similar low living standards and low (or lower) costs of staples.
Check out Ukraine, for example. I bet one Steem would go even further there.
In that specific example, it could/would also make a decent expat location for westerners fleeing tyrannical governments and/or very high costs of living. They would blend in, appearance-wise, and be able to survive on a fraction of what they must have in the west.
You're right, I too believe Steem can change the world for the better.
For the time being, it's a matter of raising awareness and lowering the barriers to entry.
Amen, bro!