Distribution is virtually free. It's essentially a solved problem. The hard and expensive part is being a gatekeeper. If companies gave up the idea that they need to play gatekeeper with their media, they could distribute it at virtually no cost.
And this to me, is the critical problem with all of these services. We don't need gatekeepers anymore, because that's a leftover from physical media. Those days are gone, and the gatekeepers need to die.