Consensus is no way to make all decisions, especially important ones where people will disagree.
- lack of consensus leads to inaction
- consensus can lead to mediocre decisions
Many stories in management case studies and books like those from Lencioni. A powerful alternative is "disagree-and-commit". https://en.wikipedia.org/wiki/Disagree_and_commit
Consensus is no way to make all decisions, especially important ones where people will disagree.