Biff is right in the sense that a lot of listeners would rather listen to something syndicated that is funny then a local effort that sucks. Don't get me wrong, I prefer live, local radio 24/7, but sometimes, it does make sense from both a financial and content standpoint to bring in something off the dish.
Radio at this point doesn't offer enough (salary, working environment, etc) to many of the people in it that have talent and produce compelling radio to keep them in radio. This results in a much smaller talent pool...making it virtually impossible to have local, effective bodies everywhere. It's unfortunate, but it is the way it is right now. Unfortunately I don't see a turn-around anytime soon, either. I happen to work full-time for a company that still believes in local radio much more then others, but the overall trend is certainly more towards less people and less local content.