In the world of proletariat and bourgeois, every entertainment is a business, infact everything is a business however in the case of NBA sometimes it usually seems like there is a conspiracy but if thought twice it could be normal circumstances that lead to the extension of games. I personally do not think this extension is for business sake or for profit marginalisation.
I would agree if only there is a little case of evidence pointing towards that but since there is none it's more like our normal speculations during every match.