Player costs (57% of the league's operating expenses) did not increase as fast as revenue. In 2016, MLB's 30 teams had aggregate revenue of $9.03 billion, 7.5% more than the previous season.
During the 2016 season, baseball's 30 teams posted an average operating income (earnings before interest, taxes, depreciation and amortization) of $34 million, 52% more than the 2015 season (the previous record). Long gone are the days when MLB was replete with teams bleeding cash.