For one, I believe the rise of right-wing talk on AM radio stigmatized the band to such a degree that liberal and centrist-minded listeners abandoned it, never to return even if progressive stations were to pop up there now.
OK, let's say that I don't enjoy football, and many channels have football games (in normal times). I can just ignore them. I wont quit watching cable because some channels run football.
Same for AM radio. It has little appeal due to noise and low fidelity to those under 50 or so. They moved on.
Along the same lines, conservative-minded people tend to embrace things the way they have always been while progressives tend to evolve more quickly. This is a generalization of course, but it's actually part of what defines those groups. With that in mind, AM radio is a technology of the past that seems to appeal to old conservative men who grew up with it while more progressively-minded people moved on to the internet and more modern technologies long ago.
You are saying that conservatives are not technologically up to date. There is no proof that adoption of new technologies has any relationship with attitudes on social and political matters.
Of course the internet offers opportunities to intensively read too, along with books and in-depth newspapers like The Washington Post and New York Times. I believe that type of media competes more with radio on the left than on the right.
Again, where is there statistical data showing that more Republicans don't use the Internet?
This is an obfuscation of the fact that a formula was developed about three decades ago for entertaining, engaging conservative talk. Efforts to find a progressive or liberal equivalent failed to attract listeners except in a few cities and then, only for a short time period. There are many opinions, but the consensus is that the progressive hosts were too intense and not entertaining.
Next, the programming style of public radio caters well to a liberal/progressive audience that appreciates a long form, intellectual conversation with experts on both sides given ample time to make their case. The one-sided, red-meat slinging style that works so well at conservative talk has typically failed when attempted by a progressive outlet, at least on the radio. Plus most NPR stations are on FM avoiding the disadvantages and stigma of the AM band.
The stigma of the AM band involves more than the quality of AM. In the top 100 markets, there are less that 180 total stations that cover even 80% of the market day and night. There is increasing noise further limiting the reach of AM.
NPR gets its strongest ratings from morning and afternoon long-form news shows. You can't compare Limbaugh and Friends to a newscast. In fact, the more serious competitors to NPR are all-news stations.
And as a listener to NPR on occasion, I find it rather centrist and balanced. Nutty Attila-the-Hun rightists may find it liberal, and maybe anarchists and socialists find it too conservative, but for the most part it is quite "fair and balanced".
Finally, a conservative audience is more monolithic in its thinking than the liberal/progressive side which is made up more of various factions, so a one-size-fits-all style of programming doesn't work on the left as well as it does on the right. I think it's fair to say that a brand new liberal/progressive network has just popped up under our radar this month but you're probably not even thinking of it in those terms until I mention iHeart's new Black Information Network. It laser-targets one of those Democratic factions and is likely to be more successful than the umbrella approach that was taken years ago by Air America as a network that tried to appeal to all liberals.
Conservatives are definitely not monolithic. There is an extreme right.. the "no masks" ones. The conspiracy theory ones. There are assorted bigots who resist gay rights, Black rights, Hispanic rights, women's rights. Just as there are extreme liberals who want property to be confiscated and redistributed and the like.
Society is not easily divided into groups, but that is because we are a spectrum, a rainbow of beliefs, interests and needs. The two main parties represent a coalition of ideas with some affinity, but there is a lot of diversity within. In many other nations, there are three or more parties, and governments are formed by coalitions, not majorities.
And there are now as many declared independents who like some Democrats and some Republicans based on specific viewpoints. That is where operations like the new iHeart BIN could appeal, were it on some decent signals in more significant markets. For the moment, while we should admire the initiative, we have to realize it is has tiny reach. Hopefully it, and other channels specific to different interest groups, will get louder and wider voices.
Unfortunately, the motley crew of stations iHeart assembled won't show much audience and has the potential to kill the effort unless more stations and more sponsors join the ranks.