That's kinda the problem with it. The time and resources one would involve to prove the point is substantial. And for what result ? At best a few people will get offended and that's it. MS has corrupted governments, insulted competitions and spied on its customers and yet they have been forgiven. So even if we prove what's is now a feeling, that they are on a PR campaign, it will achieve nothing.
They win whatever happen. It's a bit depressing.