Ego is essential to breaking through those tough barriers and new opportunities. Disregard for risk. Is this really what is needed when Google is being criticized for falling behind its competitors in innovation.
When a group of very smart people get together, there is a tendency for them to try to show themselves as being the smartest. This can lead to less-desirable situations where people don't share or cooperate as freely as they should. In the worst cases the situation could become antagonistic with individuals or entire teams and departments refusing to talk to each other. Now in a group of smart people, walks in a person like Sundar Pichai, someone without ego, who always defers to the other person, who might put himself/herself down to make the other person feel better. When two people in the group get into a conflict on an issue (remember this is a group that can get into religious wars over which brace style to use), it will be that person who mediates and gets the team going again. When the team has to vote on a new leader, that person is likely to get the most votes because he/she is the person everyone has the least issues with. Such a person who avoids conflict is able to act as transcendental force. People are more willing to listen to such a person or do what he/she says because they don't feel threatened by him/her.
Someone like Steve Jobs who always puts himself above everyone else, could also act as a transcendental force as long as people agree to that. But if someone like Steve Jobs was to start at the bottom of the organisation, and moves up the ladder to its top position, it would be by putting other people and teams down. These people might harbour a grudge or ill-will and be less likely to do what the new boss says. It is not a strategy without its downsides (For example why did someone as incredibly gifted as Steve Wozniak end up leaving Apple?).
By promoting similar people to leadership positions, Pichai is creating a environment where people with great talent but less taste for politics can also get their voice heard. I think such an environment is good for creativity to flourish.
"A good leader takes a little more than his share of the blame, a little less than his share of the credit."