The economic model follows consumer desires, not vice versa. It's a lot easier for a startup to change their business model to fit what people will actually pay them money for than for them to convince people who aren't willing to pay to ante up.

If people would pay for value, startups would spring up to capture that. That's actually what we see in the SaaS business. Consumer entertainment has always been a hard sell, which is why the radio and TV businesses were also ad-supported.