What about something you've made for fun but haven't made any money from? Should someone else be allowed to sell and profit from your work?
I'm not expecting to be "passively paid" for my hobbies. But I'm expecting that someone won't steal and profit from the things I make. Why would that be fair?
Say my hobby is statue making. I design and create a concrete statue that I failed to sell. Whether that be because I did not try or because I could not find a buyer, I could not sell it.
So I took it, and I put it in my pile of completed works: a pile of crumbling statute rubble by the roadside. In the digital case, maybe it was posted online and the pile is a timeline or portfolio.
Someone in a pick up truck drives by sees it, takes it, and sells it for half $1 million to a trust fund baby.
Was the output of my work and therefore the half $1 million stolen from me?
If there was nothing physical to take, and I had never tried to or successfully sold it to anyone and somebody else does it, was I stolen from or did I just fail to sell?
And then if I get my knickers in a twist over that sale I have to ask myself: is my hobby to be a sales person and to sell art or is my hobby to be an artist and make art?