In many parts of the world people are basically cash-only and don't pay fees for handling money most of the time. The "unbanked". This is the market Ethereum wants to serve.
Also I'd challenge 10-20 transactions per month. I think in many near cash-less societies it might be closer to 5 per day.
Also I'd challenge 10-20 transactions per month. I think in many near cash-less societies it might be closer to 5 per day.