New data from Redfin shows that nearly three-quarters of the most populous U.S. metro areas (35 out of 50) have seen an increase in wealthy renters, with Raleigh, NC, and Orlando, FL, leading the trend. "For many, renting is about flexibility," said Juan Castro, a Redfin Premier real estate agent in Orlando. "The U.S. economy and job market are evolving, and people want the freedom to move as opportunities...