I don't believe that one bit. They have a scoped heavy perspective on what they are doing so they don't skew into feature creep. It has nothing to do with big teams and little teams. Either model can work as long as you break projects down and prevent feature creep. The more features a service has to support the larger the team has to be and thus enters feature creep. And there is Product teams who think they are smarter than everyone claiming more feature ideas while increasing their department size and this only adds to feature creep because literally it is just echo chamber of development hell.