This article has already been disputed. As bitcoin has grown businesses like Bitpay are starting to handle payments for merchants, and exchanges and other busin

This article has already been disputed. As bitcoin has grown businesses like Bitpay are starting to handle payments for merchants, and exchanges and other businesses are beginning to coalesce bitcoins into wallets. That is why bitcoins are starting to become more concentrated, not because some individuals are earning more. It's actually very difficult to make bitcoins with bitcoin investment, there's only risky bets and day trading right now. There are no reliable interest-bearing instruments.