One topic Friedman nailed on the head is the entitlement of recording artists to a slice of the radio royalty pie. The medium itself has become diluted and less relevant as a promotional tool, so that indirect benefit to the performers - whose voices and personalities radio stations make their dime in ad revenue on - doesn't really seem sufficient anymore.
Their recordings, their names, their personalities, their reputations, their talents: they all make recording artists just as deserving of residual claims as the songwriters and the folks on the other side of the recording booth, who already get their well-earned and deserved share.
I don't think it's really safe to assume that giving performers their fair cut of radio residuals would diminish the business of songwriting-credit 'agreements' in the recording industry, though. Friedman is taking a bit of a leap there, but regardless, it's an issue that needs reform.