The other side is that we now live in a society where comedians refuse to make appearances at colleges across the country.  When I was in college eons ago, their appearances were a constant.  But because of the PC age we live in, as well as what I consider the ridiculous "safe space" culture of colleges and universities (this article from THE ATLANTIC highlights the issue quite well with regard to "speech codes" and "microagressions"), they simply don't want to make appearances regardless of the money they'd get because of the certain blow-back by people who are offended by their jokes for one reason or another.  I could get into a discussion devoted entirely to the absurd idea of "microagressions" and "trigger words" as they are used and abused in modern parlance, but this isn't the thread.  Suffice it to say, people are easily offended now more than ever and have many more outlets to express their offense than they've ever had before.  Take one comedian's joke out of context (there's that word again) and it's cause for offense.  Don't believe me? Read what Chris Rock had to say three years ago on the subject: Link 

George Carlin made his hay in the early days playing the college circuit and yet if he were a young comedian just starting out today, he may very well have been shouted down by the very people who lifted him up 50 years ago. That's sad.  That's the cause/effect of the culture we live in: a society where a joke has to be analyzed by staff psychologists, examined by lawyers, and ultimately filtered through a focus group to ensure that it doesn't offend anyone in any culture for any reason.