It is interesting that the case with Twitter looks similar to what happens in Russia: many russian companies like advertisement agencies don't want to make deal

It is interesting that the case with Twitter looks similar to what happens in Russia: many russian companies like advertisement agencies don't want to make deals with opposition, major mass media don't cover anti-government protests. Well, as a private company Twitter can decide for itself with whom they want or don't want to make a deal. But is it their own independent decision I wonder?