> there's only so much time people can spend consuming entertainment, and so the market for it is somewhat fixed. It's even worse than that, actually. Because

> there's only so much time people can spend consuming entertainment, and so the market for it is somewhat fixed. It's even worse than that, actually. Because existing entertainment can still be consumed long after its produced, and even consumed more than once by the same person. When you write a book today, you aren't just competing with other new novels, you're competing with every novel written all the way back to Robinson Crusoe.