Here's the deal - Trump is the nominee. "Mainstream" now means supporting Trump. Supposed conservatives who are loudly anti-Trump are going against the GOP and the will of the majority of primary voters. A radio channel aimed at conservatives will not be successful if most of their hosts are out of step with most of the listeners.
Also, his show sucks.
Here's the lineup, all times Eastern:
3pm - 6pm Sean Hanity
6pm - 9pm Mark Levin
9pm - 12am David Webb
12am -3am Cam & Company NRA News
3am - 6am Wiklow Majority
6am - 9am Breitbart News
9am - 12am Glenn Beck
Trump is a declared candidate with SS protection. Thor advocates his assassination and should be arrested. Bottom line.