Spoken like a true Marxist.
He was investing in real estate and grain futures. He was a (gasp) capitalist!!!
I had family several miles down the Avon, who were hording grain, buying property, and charging high interest. They were rather High Church though.
About real estate buying -- come on, a guy writing plays probably thought that he never knew when the money would dry up, whereas if you had land, you could always have some money or goods coming in -- that's how the nobility had survived and quite frankly how most survived in the pre-Industrial era. What was wrong with him buying up property to ensure his and his descendents future?