Even if the population of Africa might be greater than other regions, if African spending power isn't enough, then they can't use Bitcoin at the volume they'd need in order to compete with the larger economies. Meaning, if the US/EU/UK/China banned Bitcoin, I don't think Africa or some other Asian countries could carry Bitcoin alone.
This makes no sense; Bitcoin doesn't care about what volume is transacted. In fact, a transaction spending 1BTC or one 0.01BTC are almost identical on the blockchain. And running nodes is very inexpensive and easy to do, as well - one of the greatest advantages of Bitcoin over other cryptocurrencies which need expensive hardware and networking. This is essential to run Bitcoin infrastructure in developing countries, like franky mentioned earlier.
Here is my thread about building a node from spare and used parts under $50:
https://bitcointalk.org/index.php?topic=5364742.0So I don't understand what you mean with '
Africa or some other Asian countries could [not] carry Bitcoin alone'.