It's not like they're going to sit down and write some new AI algo to put Google back on top. What they are doing is just cutting the Gordian knot of management traffic jams. They can come in and say "this is what we're doing, and this is who is doing it". Even for Sundar to try that would require months of wrangling and deal making. But Larry and Sergey can come in and force their will on the company.