Writers have been experimenting with paywalls (substacks etc) - musicians aren't? Indies keep complaining about streaming and platforms killing their livelihood

Writers have been experimenting with paywalls (substacks etc) - musicians aren't? Indies keep complaining about streaming and platforms killing their livelihood but I wonder if this is just because the target for "justice" seems clearer (eg. Spotify cut, etc) Seems to me that music has an additional challenge which is most revenue channels requires middlemen: streaming infrastructure, merch factories, venues owners, technicians, etc which artist can't/won't replace. At some point musicians - as product creators - need to have a clear biz model for their enterprise and passion to try it. Not just passion to create, passion to sell.