Castles in the air are designed by architects and demolished by accountants!
Two big problem with accountancy are that numbers don't capture intangible values like reputation, and to an accountant money available NOW is worth far more than the promise of money tomorrow. However, done honestly, numbers don't lie about an organisations overall financial position. Many an apparently thriving business is broke, headed for bankruptcy, subsidised, or being operated fraudulently.
Chaps working at the front line rarely get to see the books, and if they do they are hard to decode. For example, it's easy to imagine that the cost of stocking spares is trivial. Actually, once you scale up from a shed full or so, locking money up in spares soon gets expensive. A big operation needs an Inventory control system, admin staff, a warehouse (on which you pay rent &/or rates), environment control (heat and light), storemen, racking, mechanical handling equipment, transport, telephones, and security. All this drains money continually, and the overhead may well exceed the value of the stock. If a business makes unwise or unlucky decisions, it's all too easy to end up with a warehouse full of stuff that's rarely wanted. Most of money saved by 'Just In Time' manufacture comes from reduced storage costs, and most stock management systems focus on reducing stock holdings to a bare minimum.
In defence of accountants (god forgive me), they rarely have any authority to change a business. Instead they offer facts and advice to the Managers and Owners who are the real decision makers. This being the real world, managers vary between genius and incompetence, owners may be either brave or cowardly with their money, and there may be political interest as well. Add an ill-informed workforce to the mix and the fog descends.
One thing that stands out about successful industry is their willingness to adapt as the world changes. Companies who can't or won't adapt go to the wall.
Dave