Rush isn’t on the hook. Liberals, including the sponsors they influence, don’t control Rush, and they never will. Let them go wallow in their hypocrisy until they rot.
Any sponsor who caved in to the boycott crowd is a loser. I would bet that any of them have lost much more than they have gained by dropping Rush. This will blow over in a short time and they will be grovelling to get back on the Limbaugh band wagon. Carbonite stock lost 12% when they abandoned Rush.