By David Gelles, The New York Times A half-century after founding outdoor apparel maker Patagonia, Yvon Chouinard, the eccentric rock climber who became a reluctant billionaire with his unconventional spin on capitalism, has given the company away. Rather than selling the company or taking it public, Chouinard, his wife and two adult children have transferred their ownership of Patagonia, valued at about $3 billion, to a specially designed trust and a nonprofit organization.