WB has never had a good motive for making Superman movies. Man of Steel was made so the Siegel family couldn't sue WB.

WB isn't giving a black Superman a chance out of the goodness of their heart, duh, but we take what we can get. No one cares about a studio's motive when they hire white actors and directors but as soon as WB starts moving forward with a black Superman, people start wringing their hands.