Here in Sweden we have a legal tradition where the government doesn't have power over the enforcement of the laws-- parliament can make any law it likes, and it can be anything, but enforcement and the courts are isolated from the politicians.
I really don't like that the commission can make up rules, or fine people etc. It's a bad system. It should be done by an impartial regular, or prosecutor or a court. This kind of system opens up the commission to political blackmail and threats from powerful states, it opens up for corruption, it opens up for uneven enforcement, and there's just no reason to have the system this way.
You could easily imagine a world where Google was a big US government darling and where they put their weight on the commission and got an outcome that isn't in accordance with law, but with the right system, one more like the Swedish system, that won't be possible.