Nathaniel Herreshoff S Class

I think the S Class boats are quite stunning. Why, why, why aren't there modern versions of these classics. Here is a brief description from the S Class Website.
The "S"-Class Boat is a displacement boat that is quick in light air, stiff in a breeze, andremarkably agile in response to her helm. She is powered by a five-eighths rig consisting of aself-tending jib, a main, and a spinnaker. The cockpit provides unusually ample working spacefor a one-design racer; it is moderately deep, comfortable, and relatively dry. The cabinprovides shelter from foul weather, storage and space for a portable head if desired. Mostwere produced between 1919 and 1941 by the world famous Herreshoff ManufacturingCompany in Bristol, Rhode Island; designed and supervised by "Captain Nat" Herreshoff - theWizard of Bristol.