“there is no need to sell single licenses for SFX (at least sound packs) at all.”
That would be like McDonald’s saying you have to buy two burgers, you can’t just buy one. What about the people who legitimately only need to use the sound effects once? Or only want one burger?
What about the people who are making a golf video for a client and they need one sound of a golf bll being hit, they use it in the one video and have never worked on golf video since?
What about the people who working on a Webby award winning Facebook app to promote Assassins Creed that need loads of digital interface sounds that he never been used again.
A dragon’s roar for a logo sting, a car revving it’s engine for a title sequence etc etc.
I can think of dozens of other examples and that’s just stuff that I’ve worked on. And I am only one human. Add up all the humans that frequent the hallowed halls of Audio Jungle Land, and you’ve probably got a considerable bunch of humanoids that need sound effects once, and rarely need to use them again.