Tom Yeung here with your Sunday Digest. In 1792, 24 merchants and brokers gathered on Wall Street to sign the Buttonwood Agreement, which became the foundation for the New York Stock Exchange (NYSE).  They got a great deal. Over the following two centuries, entry into the fast-growing NYSE became harder and pricier to come by. By the 1990s, memberships (seats) were sold for over $6 million in inflation-adjusted dollars. Now, the funny thing about these types of security “marketplaces” is that they are the u ...