Bitcoin Q&A: Wealth Distribution Statistics

What are your thoughts on wealth distribution / concentration in Bitcoin? Addresses are not people! The majority of addresses are used anonymously / pseudo-anonymously, so clustering is very difficult. Exchanges or payment processors may be holding the funds of hundreds of thousands of people in only a few addresses; at the same time, a single person could be controlling thousands of addresses with very small amounts, or a single address may be a multi-sig that is controlled by more than one person.