some really clear trends have developed in the commercial real estate space. … available to them in today’s commercial and residential real estate markets.

Why were Jews the money lenders in Christian Europe?

Because the Catholic Church, for a long time, forbade lending money at interest. However, people still wanted to borrow money, so they turned to the Jews.

Even after the Church rescinded the ban on interest, the Jews had become established as bankers.

Also, banking lets you carry your assets with you fairly easily; which is valuable when you might get kicked out of a country.