I think it's going to last much longer than many do. It won't have the nationwide appeal that conservative shows do but there are pockets where it should do well enough to stay on the air. (New York, San Fran, Chicago, Hollywood)
Fundamentally I think it's good for conservatives. The more these people talk the more they help conservatives. Maybe Michael Moore will get a show!
Those cities already have Pacifica Radio. Rush has said many times that the old ABC talknet just didn't work because stations had to commit to 3-4 shows.
If they had some genuine talent. Someone light and funny, they could survive. But they don't actually want to build an audience. They want an echo chamber. A "Three Hours' Hate," to paraphrase Orwell.