Racing's top global powerhouses: From royal families to Irish farms

    (CNN)Horse racing may be the sport of kings, but it is also the business of behemoths.

    All-conquering global stables monopolize the best breeding programs and plunder the best thoroughbreds to keep the conveyor belt rolling.
      These Barcelonas of the equestrian world are all clamoring for the next money-spinning champion and are willing to part with mil