I don't understand your bitcoin example. If I understand bitcoin, the work of mining increases as more bitcoins (wealth) are produced. The rich can buy more m

I don't understand your bitcoin example. If I understand bitcoin, the work of mining increases as more bitcoins (wealth) are produced. The rich can buy more mining hardware, start/hire mining services, etc. than the non-rich. Over time, those who can invest in higher performance mining get wealthier than those who can't. Over time, this would seem to concentrate bitcoin wealth among fewer, wealthier people. Am I missing something?