Someone biulds a thing and puts it on the curb in front of his house with a sign:

I had fun building this and learnt a lot. Do with it whatever you want.  

Then someone else comes along, takes it, and sells it.
I fail to see how the inventor was taken advantage of. They presumably thought about which license they want to use and specifically chose this one.

I know Luke Smith is controversial, but this Blogpost of him is kinda funny and fits the topic:

Why I Use the GPL and Not Cuck Licenses