Considering Petty hasn’t had a hit song in a couple of decades, the exposure might give his long-since-deceased career a boost.
Actually, Petty made a ton of money last year.
http://www.forbes.com/pictures/eeel45ehmg/the-worlds-25-highest-paid-musicians#content
16. Tom Petty & The Heartbreakers ($38 million)
Some acts seem to have an infinite shelf life on the road, and Tom Petty is one of them—the bulk of the band’s annual take comes from 46 dates over the past 12 months.