 By the 1930s, it was common practice for programs to be owned and produced by the advertiser, who in turn leased production facilities and air time from the network.The advertiser frequently got top billing over the star, as in "The Pepsodent Show starring Bob Hope" or "The Chase and Sanborn Hour starring Edgar Bergen and Charlie McCarthy".If a sponsor dropped an otherwise popular show, the network might choose to continue producing the show itself while it sought a new producer/sponsor, and in the meantime sell individual commercial slots in the show to any sponsors interested.