Where are you drawing the line and why? And why should you benefit for your entire life from work that you did once and why should your heirs also benefit after you are dead?
As I said, I'm all for you getting paid for your work but can you name me any other job where I can do the work once and then have myself and my heirs get paid for that work over and over again for years?
Do I have a right to licence my designs, my logos etc....do companies have a right to license their ideas and profit from it? Of course.
If I write a piece of music and it's used for different purposes- in a film, on a television commercial- ar adio jingle...., I should be paid.