Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

What is needed to be a “broker”?
You must understand that: So, if you -- the prospective buyer -- are in Waukegan, do you take the train all the way to New York City just to buy 100 shares of stock?  No.  That would be absurdly expensive.  So, you hire an agent in NYC who will broker a deal for you in the exchange. Fast forward 100 years, to the time when instant communications is available.  Why do we now still need brokerages, when the Exchanges could set up web sites and let you do the trading? The answer is that the Exchanges don't want to have to develop the accounting systems to manage the transactions of hundreds of thousands of small traders, when existing brokerage firms already have those computerized processes in place and are opening their own web sites. Thus, in 2017 we have brokerage firms because of history.