Basketball is on the brain in March. And while the differences are aplenty between college basketball and professional hoops, this sports season got us thinking about the business of athletics. Between ticket sales, sponsorships, merchandising, and media rights, Price Waterhouse Coopers estimates global sports revenues will grow to total roughly $145 billion. For an inside look at some of the trends shaping the business of basketball, I reached out to Rich Gotham, President of the Boston Celtics. An edited version of our conversation follows: