So, if everyone was mining Bitcoin, they would earn around US$0.15 per month (assuming 8e9 people, a 6.25 BTC coinbase mining reward every 10 minutes plus some

So, if everyone was mining Bitcoin, they would earn around US$0.15 per month (assuming 8e9 people, a 6.25 BTC coinbase mining reward every 10 minutes plus some 10% transaction fees, at a price of US$40,000/BTC, and zero energy/mining rig cost). Yay, Bitcoin is solving global poverty!