Presumably lots of people in Nigeria have access to other currencies, such as dollars or euros. Not uncommon in countries with a very unstable national currenc

Presumably lots of people in Nigeria have access to other currencies, such as dollars or euros. Not uncommon in countries with a very unstable national currency. So those people could buy BTC with their €€€ or $$$ and then sell them for massive profit to their fellow citizens... ...although, thinking about it, they could presumably only sell to fellow citizens who didn't have access to foreign currency themselves. So would be being paid in Nigerian naira --which might be a bit more risky. It does sound like one of those "get rich quick" opportunities. Until you start trying to work out the logistics.