This is what my friend from the marketing HQ told me.
Well then your friend is wrong and a racist himself. Since Polish costumers never had a chance to respond to this ad, it's solely Microsoft opinion that depicting black gentleman in it's ad is offensive to Polish society in general and what potentially Polish client might or might not find offensive in this ad. Even if this view was to be true it was still the opinion of Microsoft executive that ultimately was responsible for this decision. Therefore in order to increase the sales or keep them at the current level it was Microsoft's opinion that a white person should be used in one of it's ad's. As to not finishing the job I guess there must have been some budget cuts so only the face got replaced. So Microsoft's generalization (which also can be viewed as form of racist in itself or at the very least a bias opinion) of Poles and the potential of profit was the motivating factor in making this decision.
Polish consumer did not had a chance to respond to Microsoft's new and improved ad since it was scraped as soon as it seen the light of day, making this so called racist issue still just an opinion of Microsoft. Now in order to show that such behaviour will not be tolerated by such a respectable and modern corporation as Microsoft, they should fire the person responsible, take responsibility for their employee who made this decision on behalf of Microsoft. After all not only that it reflects badly on the Microsoft's image as a whole, it is really an opinion and bias of one of their own influential employees in a leadership position that made this unfortunate decision in order to benefit Microsoft by maximizing potential profit and not to not to offend Polish costumer as you claimed. Taking the responsibility for what has occurred would generate to much negative opinion of Microsoft or perhaps even a lawsuit or two so this will never happen, instead they are passing a buck on to the Poles who never even had a chance to vote with their wallets to see if Microsoft's theory of them being offended holds water.