Self-regulatory bodies are usually centralized and separate from any individual corporation. They also tend to answer directly to a government agency and cannot be disciplined by a corporation. While there can still be issues such as a strong revolving door and potential indirect pressure to be nice to the regulated entities, it’s not as terrible as what Boeing and other airplane manufacturers get to do (inspect themselves in lieu of regulatory inspections). That’s strange, because lives are literally on the line, more so than some other industries with more independent examinations.