In 2011, music critic Dave Whitaker wrote, "every generation since the beginning of recorded music has introduced a game-changing genre", from swing music in the 1930s, rock and roll in the 1950s, punk rock in the 1970s, and then grunge in the 1990s. However, he states "grunge was the last American musical revolution", as no post-grunge generation has introduced a new genre which radically changed the music scene. He states that the "digital revolution" [(online music, file sharing, etc.]) has meant that there has not been a "... generation-defining genre since grunge", because, for "one genre to so completely saturate the market requires ... a music industry with immense control over the market". In 2016, Rob Zombie stated that grunge caused the death of the "rock star"; he states that unlike previous stars like "... Alice Cooper and Gene Simmons and Elton John", who "... might as well have been from another fuckin' planet", with grunge, the attitude was " need all our rock stars to look just like us."