> considering the geopolitical pressures on huge companies like this.

This seems backwards. The reason they can't be broken up is because of the pressure that huge companies like this put on individuals in government.

No different than why a small town mayor can't jail the organized crime ring that runs his town. If he tries anything, they will shoot him; or at least put up posters all over town accusing him of being a pedophile (and pay somebody to file charges against him that will eventually be dismissed for lack of evidence.) He wouldn't have become mayor in the first place if they hadn't supported him and attacked his potential competitors.