This is virtual dictatorship by a strong character making unilateral decisions on behalf of the congregation. No one man can possibly know everything which is necessary for the Church, or individuals, to grow to their full potential. Another problem with this form of government is that the dominate character may become threatened by a growing ministry in another person and will tend to quench their growth. This is government by the Pastor, or congregation, with no reference to any other Church or authority. While this may appear to be a blessing, it is limiting because an isolated fellowship will not be exposed to the richness which comes from the rest of the Body of Christ.
Isolation can also be a breeding ground for error.
Even the history of Israel shows the error of human government in God's plans. The authority of Jesus in the Church is not open to discussion. He is her absolute ruler. The Church is not a natural phenomenon, it is a supernatural creation of God. Therefore the only person who can possibly lead the Church into God's full purpose is the Son of God.