Their economic model is also based on trying to come up with new content all the time (hence podcasts), because once people realize they mostly listen to the same songs over and over again, they will resent the cost of a subscription.

This is the main difference between video and audio. One rarely watches the same movie or show more than once (it can happen, and there are people watching Succession or Friends on loop, but they're a minority). But we often listen to the same songs / artists and like the familiarity of it.

Subscription for music is not just detrimental to the artists: it's fundamentally a bad deal for users.