What I'd like to see - but don't think it likely - is that 'superstar' salaries in sports and entertainment come down to something a bit more reasonable making some of these properties less expensive to make, and may encourage publishers to take on new artists from time to time. It could potentially also have the effect of making it cheaper to consume these entertainment products, meaning people are more likely to consume them via legitimate means - assuming simple methods of sourcing and using said media.
While I'm spinning candyfloss unicorns, how about CEO and Board salaries coming down to something which is no more than 10 times that of the lowest paid worker at their organisation like is done in some Scandinavian countries.[1]
[1] No I don't have a citation for this, I remember hearing about it are some point in the past 20 years *waves hands vaguely in 'that' direction* but couldn't find a relevant link after a quick google search.