There is some pretty impressive fantasy politics going on around this anti-trust stuff. As you say they have departments full of people that deal with all of this, except the times when Cook needs to essentially present their work.
On top of that, nothing is going to happen anyway. Even if in a few years of the process they decide to make changes it'll be a few more years before anything is legislated. So even if people that think what's going on needs to change get everything they want, realistically, it won't be until later in the decade until anything starts to move.
It must have something to do with the way politics is presented to the masses these days, but it's not a TV show. Playing guess the plot line doesn't really work.