> the benefit you get from coming up with this idea is that you can publish it for the world to see, and that's the only way you can benefit from it

That’s your opinion, but it’s not the spirit of the law. I’m personally fully against Intellectual Property, including for movies and music, for reasons that are obvious (public money is being spent aimlessly trying to prevent two private individuals from copying things that are copied by their very nature of being published - or trying to prevent people from using ideas that are contagious - what next, put a copyright on political ideas? on dance moves? on beautiful colors?) but that’s not the law.

> we would have gone thousands of years with no method

There are other methods: The 4 arrows. The tab method is much more efficient and easy to implement, but we would have gone with the 4-arrows-to-navigate-fields method.