are you saying in a country that voted overwhelmingly for obama 95% want limbaugh?
one big problem is that in most parts of the US there are no free alts for political talk while driving or working, and that makes for a lot of misinformed people living in an alternate reality that might very well vote and think differently on many issues if they had alternatives. prog talk radio is a great place to get news while working or driving. liberals definitely like listening to music more though.
they have a monopoly, they subsidized it to start it, like they did fox for billions, and they use their monopoly power to suppress competitors.
and limbaugh and hannity didn't get paid 1/2bil$ for selling flooring and penile enhancement formula- they got it for selling war, deregulation, tax breaks, and global warming denial.
and one reason RW radio has kicked liberal ass for 20 yrs is that there's no written record- it's invisible to the analysts, historians, etc. and so the left strategizes and evaluates in a talk radio induced fog blaming the wrong factors and ends up playing catchup trying to figure out how even in a 'democracy' the 1% and the 10% right keeps winning.