My experience has been the total opposite. When each team is responsible for a service then to build anything complex you need to have meetings with stakeholder

My experience has been the total opposite. When each team is responsible for a service then to build anything complex you need to have meetings with stakeholders from a bunch of teams. So much time wasted on coordination compared to when working on a monolith. There you usually just need to get buyin from the platform team plus at most one other team. And that assuming you can't just build it and open s pull request which is often the case.