Here's another way to look at it, when you buy a game what are you really buying? Do you now own the code, art, so on? Do you own the bits? You can't copy a gun, but it's very easy to copy music, movies, games. If you make a copy is that ok? You do own it so why not? And if so can you make 1000 copies and go sell them? Why not? Is what you own the medium it's on (the disk) only? Why? How does that work if it's downloaded?
This doesn't seem so clear cut to me. Maybe I'm doing gymnastics but if so I think it's because the path isn't as straightforward as you make it out to be. Again, I'm not saying you're wrong, I'm really not certain...
Here, let me do the same thing for Jewelry.
Jewelry is often hand crafted and unique; as in, the piece I make for you will be the only one like it in the world. Not all jewelry is this way, but much of it is.
In this regard, jewelry is very different than most industries. Exact duplicates of the same game are produced in the tens of millions; movies are printed in the same way; cars roll of an assembly line in the hundreds of thousands.
As such, the crafter of your wife's (or husband's or whomever's) wedding ring likely isn't just mass producing a popular design, but creating a specific piece that is unique and not identical to any other out there. That makes his situation a bit different. He isn't producing millions of the same ring and asking for a cut of resale on all of them; he is producing a
unique ring that cannot be "pirated" or "duplicated."
Further, jewelry is very expensive. The production of a single wedding ring may cost the jeweler hundreds if not thousands of dollars; by contrast, the production of a single disc for a video game may cost the producer a dime. This makes it harder for the jeweler, as the sale of any particular ring is a very big deal; he can't afford to sell it at drastically reduced prices, because the cost of creating the ring was so high to begin with. If we want jewelry prices to be more flexible, we likely need to offer jewelers a cut of resale on their designs.
I can go on, but hopefully you can see I just fabricated, out of thin air, an argument for why jewelers deserve a cut of resale and are special and different than everybody else. I could do the same thing for most industries, as well -- all I have to do is
want to make the argument, and I could find and convince myself of these things rather quickly.