Gilbert and Sullivan and "Ruddigore", which were less successful than the seven other operas from "H.M.S. Pinafore" to "The Gondoliers", Sullivan asked to leave the partnership, saying that he found Gilbert's plots repetitive and that the operas were not artistically satisfying to him. While the two artists worked out their differences, Carte kept the Savoy open with revivals of their earlier works. On each occasion, after a few months' pause, Gilbert responded with a libretto that met Sullivan's objections, and the partnership was able to continue successfully. In April 1890, however, during the run of "The Gondoliers", Gilbert challenged Carte over the expenses
Gilbert and Sullivan copyrights expired at the end of 1961, and even afterwards, the D'Oyly Carte Opera Company influenced productions of the operas worldwide, creating a "performing tradition" for most of the operas that is still referred to today by many directors, both amateur and professional. Indeed, Gilbert, Sullivan and Carte had an important influence on amateur theatre. Cellier and Bridgeman wrote in 1914 that, prior to the creation of the Savoy operas, amateur actors were treated with contempt by professionals. After the formation of amateur Gilbert and Sullivan companies in the 1880s licensed to perform the operas, professionals recognised that the amateur