@BillRM,
That neither Jackson nor Sharpton were sufficiently taken to task (and in the case of Sharpton, prosecuted) has no bearing on how the NBA has reacted to the public revelation that one of their owners is a bigot.
What is your argument? That since Jackson and Sharpton (two racist Race Hucksters of the worst kind) were not properly punished either by law, economically or in the public square, other arguably less malignant but equally indicative expressions of bigotry should be given a pass?
If you are outraged by those who have settled on Sterling like a pack of ravenous jackals, but who not only ignore similar and worse examples of bigotry, but support the bigots, I'm with you all the way.
However, irrespective of that outrage and its source, the NBA had to deal with a very real economic problem concerning a very real bigot. That the economic problem is born of a firestorm fueled, in large measure, by Media hounds and those who personally benefit from racial unrest, is not something the league could take into consideration.
If there was any evidence that this recording was edited so as to distort the truth or maybe even if Sterling didn't have a track record of bigotry, the NBA might have stood with him. I, at least, hope they would have, and if they didn't, they would then be well deserving of scorn.
If your house is on fire, and miscreants are throwing gas on it, you don't refuse to put it out declaring there really are no flames or they that wouldn't be so bad if not for those bastards with the tanks of gas.