Why are those "factors"? Do you have examples demonstrating the these are indeed cause-effect relationships and not just your opinion? e.g. "getting grade infla

Why are those "factors"? Do you have examples demonstrating the these are indeed cause-effect relationships and not just your opinion? e.g. "getting grade inflation under control would reduce self-confidence" - For every student? According to who? What do school test marks have to do with starting a business?