Why do churches often ignore necessary reforms?

Gary Powers explains in this video that it is sometimes difficult for churches to enact biblical reforms because of the way church government is structured. For instance, there is often a church board and senior pastors instead of a biblical eldership. There are many man-made ideas in church government that will sometimes override what Scripture commands regarding a certain subject.

Because of these structures within the church, men can be consequently afraid to preach the truth and make changes because they fear they will lose their jobs. Oftentimes, it is the fear of men that prevents us from doing what Scripture commands. Yet, we are called to fear God and obey and delight in His commandments. 

Psalm 112:1 (NKJV) – “Praise the Lord! Blessed is the man who fears the Lord, who delights greatly in His commandments.”

I think that it's the fear of man. I think churches often don't bring reforms. I think first of all because of the way church government may be structured. You have a church board you don't have a biblical eldership and you have You know senior pastors and you have all kinds of man-made ideas in church government and because of those government structures you've got men that are afraid to preach the truth, they're afraid to make changes because they're afraid to lose their jobs. You