If you had understood the business model and how it really makes money, would that have changed your mind on joining? Or more give you more info to succeed once you were an employee?
If you are an engineer and the company primarily makes money through cold calls by salespeople, then the salespeople are a revenue generating center and you are a cost center. A company increases profits by increasing revenue and reducing costs, so you can figure out which group will be prioritized when it comes to promotions and bonuses.
Got any examples?