When Andrew Schwarz and his sister Wendy Schwarz-Gilder decided to turn their longstanding enthusiasm for the Turf into a deeper commitment, in 2017, the option that best matched their outlook was a modest breeding program. If that meant taking their time, patiently building each page, so be it. All they knew was that they wanted to work with others of a similar disposition: people who gave time to each other, and to their horses. Schwarz, after all, is a real estate developer in New Orleans. "And in real estate, five...