Cut to the ultimate basics. There are only two things you can do on radio and be commercially successful. One is play music, and the other is to talk. Therefore, neither is going to disappear. What's played and talked about, and in what format, is the part that can change. I try (and admittedly) sometimes fail to not get too animated about these things because of the old adage... what goes around, comes around. Throughout most of the 1920s we saw a solid wall of Republican, big business supporting Presidents. That ended with the Great Depression in 1932 and the 20 year Democratic party stranglehold on the Presidency. However, in the ebb and flow of things, even the seemingly unstoppable President Franklin Delano Roosevelt, with a large Democratic majority in Congress, still couldn't get the Senate/Congress' approval to stack the court... and that occurred in the later 1930s when FDR was still on a popularity high.