I'm actually just thinking about content. Part of our business is podcasts and selling premium subscriptions incurs a 30% take and all you get is some consideration in placement in Apple Podcasts. And you lose direct access to your customers.
...that I can use for free to build a Mac app that won't run without security warnings, or to test in a simulator -- otherwise I have to pay $100/yr. The 30% tax brings no value.
Sounds like Patreon helped you after all.
I'm not saying that they promote or market you, but having the name (much like Apple) seems enough to encourage people to pay you.
OTOH, I certainty don't think that their cut sounds like a good deal; rather, it sounds more like your options are a bad deal or no deal at all.