Still, even with a broadening of the company, UA struggled. The coming of sound ended the careers of Pickford and Fairbanks. Chaplin, rich enough to do what he pleased, worked only occasionally. Schenck resigned in 1933 to organize a new company with Darryl F. Zanuck, Twentieth Century Pictures, which soon provided four pictures a year to UA's schedule. He was replaced as president by sales manager Al Lichtman who himself resigned after only a few months. Pickford produced a few films, and at various times Goldwyn, Korda, Walt Disney, Walter Wanger, and David O. Selznick were made "producing partners" (i.e., sharing in the profits), but ownership still rested with the founders. As the years passed and the dynamics of the business changed, these "producing partners" drifted away. Goldwyn and Disney left for RKO, Wanger for Universal Pictures, and Selznick for retirement. By the late 1940s, United Artists had virtually ceased to exist as either a producer or distributor.