Vanguard is structured as a mutual company; it is owned by funds managed by the company, and is therefore owned by its customers.
I thought that was a (patented) feature of their american funds only, but not european?
So at Vanguard the decisions are made by people investing in its products.
You wish, it’s almost always the management who call the shots. They have $5T+ AUM, even the richest men on Earth (Bezos) has 50 times less.