That's absolutely not true, though. People buy stuff all the time. Clothing, shoes, sporting goods, dishes, food, housewares, books, DVDs, etc.
The "freemium" approach Spotify takes is a poor example because they're not charging for their real service of music streaming, but instead to get rid of advertisements. They've moved their own goalposts, and the question isn't "Is streaming music worth $10 a month?" but "Is it worth $10 a month to get rid of this commercial?" If the options were "Pay $10 to stream music" or "Listen to nothing," the results might be a lot different.
> One common response to this is "well, maybe everyone should be hobbyists again making content for free," but surely we can find a better middleground than structuring things such that we depend on people toiling away in their freetime to produce the content we happen to want. For example, I'd rather my favorite content providers be able to feed themselves working on this content. We both benefit: I get to enjoy more content. Depending on hobby work doesn't get us there.
I'm not making that argument, and you're setting up a false dichotomy. There's no reason content creators need to use advertisements and can't charge for their content instead. It worked fine for music and movies for over a hundred years, and books have been using that model for hundreds of years before that.