A popular feeling is that inventors deserve most of the rewards from their inventions. This is actually quite strange. Inventing is easy - you just find an idea, sit down in your spare time and work out the details for fun, and that's it. But to do business is different - you usually have to spend money before getting any reward and might lose everything you spent. People don't like that. It can also be boring, so they don't do it much. It makes more sense for the lion's share to go to the person doing the work that most people don't want to do. They're the scarce resource, not inventors.

I'm sure most people here have put a lot of work into designing/inventing something or other, but wouldn't feel cheated if they found someone else had seen their idea floating around the internet, rebuilt it independently to fit a paying market, done the hard work marketing it, and finally made money off it. Those are the hard bits!