When I first moved to New York, I worked at a company that was an Ad Injection toolbar. I had no idea what the company did for six months.
They hired me to make them a website. I worked alongside an art director and a content creator. Everyday, the reoccurring question was, "what exactly do we do". I was disconnected from the sales staff and the marketing side, so I kept working on a basic WordPress site.
Six months in, we heard that the office was going to close. There was little to no warning, then a week later, we heard that the FCC raided the Florida home office for the CEO breaking tons of spam laws.
The overall structure of the company wasn't necessarily designed to keep people unaware of what they were doing. Instead, they had so many things that the company did, but most of the other "things" didnt make any money. When you boiled down the operations, you realized there was a small number of things that was hugely profitable (spam/toolbars), then a ton of other things that were nonsense and unprofitable.