And, especially, so that anyone can improve it. Q. Or steal it. It belongs to everybody already. Of course people steal things that are free. Other people who want free silver dollars won't be able to get them because the greedy ones will take them all.
Greed works that way.
Some people try to take it all. And you're wrong. Software doesn't work that way. There's no limit on how many copies you can give away when you're dealing with software. You only have a certain number of silver dollars, but you can give away all the downloads you want.