There are people that justify everything with; "it's just business". Many people think that all you have to say are those words, and then you can just do whatever you want with a clear conscience.
I learned how things work early... When I first started, I wanted to sell a certain product that was a little too involved to make myself. I went to another maker and noticed they had a form to fill out that was for applying to be a retailer of their products. On the form it said to briefly describe how you would be marketing their products. So, I said that there was a specific niche I focus on, and I was going to custom adjust their product to fill that nice.
Well, some time went by and I never heard back from them. I moved on. A couple months later, I see somebody mention that this same company now has a specific model dedicated to the exact same application I had mentioned in my form. They had been in business for 30 years and never thought to come out with this item, so I seriously doubt them coming out with it a couple months after I mentioned it, was a coincidence. I sent a letter to their president and told him... his employees must really be desperate for ideas, if they have to resort to plundering the retailer request forms for new ideas... I told him that maybe he should hire me... Then he wouldn't have to rip off other people's ideas.
I never got a response of course. But it just shows you how low companies can be. After that, I haven't ever told anybody about a single one of my ideas, ever.