I also wonder why I still check in, admittedly now once or twice a week, usually on the weekend.Every now and then it brings out a smile or a fond memory. Personally,I've gone to a Radio station every day for over 30 years and I still think it's the best business out there.
As to the belief that Corporate radio makes all the calls in a large public traded company, I've found it couldn't be further from the truth. Once they put a GM in place, establish guidelines, etc, they tend to stay out of the mix. Then , monthly, quarterly,annually, by various metrics, the success of the GM and the management team is reviewed. Ratings,accounting practices, revenue generation,profitability,HR procedures, all parts of the gig.
Often, it's the private companies that drill down even into playlists and on-air contests or content issues the most. Sure things like format changes need review and approval, but most of the big boys are so busy they just want you to run the stations, exceed your ratings, revenue and profit goals, and serve your community.
Perhaps my own unique experiences.Surely there are cases to the contrary. Interestingly,my posts usually go unanswered here anyway. I've said it before and will again. Technology, emerging platforms like streaming, or eventually HD, and a belief that well programmed radio stations committed to excellence in execution and service to it's listeners and advertisers will win still endures.