I think the analogy would work better as:
You make a pencil.
Someone takes your pencil, and puts it in a really nice box with some other pencils.
People use those pencils to draw a $10 million picture.
The box maker uses contracts to ensure they get a 10% cut of that picture sale.
Actual pencil makers gets no cut.
I can see why this would annoy pencil makers, no matter how nice the box is, or how much effort they put into sales. At a societal level it seems incentives are slightly out of wack too.
Personally, I'd rather see all the money go to the artist than add more levels of ownership, control and cuts, especially if the inputs are non-rivalrous.
The classic economics example is lighthouses, we all benefit from the non-shipwrecked ships bringing goods to market but feel like the merchants should probably contribute to their construction via taxes rather than rely on randomly charitable lighthouse builders (see: Public Goods)