it generates billions in revenue NFL industry earnings surpassing $13B the sheer size of this entertainment behemoth it generates billions in revenue highest-revenue sports league in the world via Market Watch highest grossing leagues in terms of revenue the sheer size of this entertainment behemoth multi-billion-dollar business raked in $13 billion the sheer size of this entertainment behemoth it generates billions in revenue it generates billions in revenue $13 billion it generates billions in revenue Market Watch teams raking in $13 billion 28 billion dollars some $4 billion $13 billion 13 billion dollars $13 billion in $13 billion in revenue in 2016 28 billion dollars $13 billion the most lucrative professional sport in the country it slightly ahead $13 billion organization based on 2016 revenue $13 Billion multi-billion dollar per year business rich profits for sports leagues it generates billions in revenue Market Watch