For 14 years after graduating college, I worked at the toy company my family owned. It had an office of 15 people, and revenues of $20 million.
I learned everything there was to know about the business. Branding, licensing, manufacturing, sales, and even product creation.
Then one year, we created and brought samples of a brand new product line to a trade show - without proactively protecting the intellectual property.
That night, our samples were stolen from our (locked up) showroom. Not to our surprise, we saw very similar products on the shelves of a large retailer a year later.