Here is a look at how incentivized the NBA, it's partners and teams, and advertising money is to try and extend series to 7 games.

My takeaway: 7 games series are more common when they are more lucrative. But because each round increases the likelihood of parity between the teams, financial incentive can hardly indict the NBA in pushing series to 7 through officiating.

Yet the incentive is there, and for 24.2 Million dollars, its hard not to think there is some systematic pressure to extend. Interesting to think about.