People ignore these vast tomes. They are more likely to follow something they have the time to assimilate.
Having been in a senior position in a major professional body I can vouch for the fact that much regulation is ineffective. People such as financial advisers, insolvency practitioners and many other professionals are required to follow rule books of amazing complexity, breach of any provision of which can result in disciplinary proceedings. Large firms can afford to employ regulatory departments to make sense of these. Sole practitioners and smaller firms ignore much of the guff.
What is needed is a short set of principles together with examples of good practice. These can be more readily enforced than massive rule books. I accept that in some areas, such as client money handling, detailed rules may be called for but otherwise they do more harm than good.