The Federalist Society has been funding and promoting their preferred candidates from the moment they enter law school, ensuring they clerked with the right people, and putting their names on the lists for judicial appointments. Roberts was the first of the Justices that they promoted to the Court, and he's definitely the least radical.
But Roberts has completely lost control of the Court, and allowed Allito and Thomas to run amok. Leaked decisions, tossing precedent out with no consideration of the consequences, corruption and influence peddling on steriods. At this point, the best hope for the Court is that these two retire soon, and are replaced with liberal justices to restore the balance.
There then needs to be a Congressional Investigation of corruption of the Supreme Court.