“It is difficult to get a man to understand something, when his salary depends upon his not understanding it!”

In that regard, you cannot make a manager understand a thing that may detrimental to the profits of the company. Because the profits decide upon the size of the manager’s bonus - even if the profits are entirely fictional, only exist as a plan, a power point presentation or are pure hype for investors. So managers have a vested interest in insisting that they can circumvent regulations/disregard laws/lobby for exemptions/… in order to make more money, no matter what reality looks like.