Doesn't your radio have a tuner that lets you choose the local station? If you and your neighbors prefer the local station, then the local advertisers will place their ads where you can hear them. Meanwhile, competition drives down advertising rates which increases the advertiser's profit margins and their competition drives down prices.
<voice=Yakov>What a system!</voice>
I can't believe there are that many stations to choose from that there aren't enough formats to go around and attract listeners and advertising revenue.
Just because we bought Alaska from the Russians doesn't mean capitalism isn't allowed there, does it? What part of the constitution would apply here?
In a couple of years, XM and Internet radio is going to eat their lunch anyway.