Patreon proved the business model but have two big problems: one, they are based in the USA,
Like itch.io and SubscribeStar... The later is owned by a none US citizen, but entirely located in the USA, from the hosting to the postal box used as registered office, but the three depend on the Californian jurisdiction.
and two, they are big targets using stripe as their payment provider.
Like itch.io, that provide less variety in terms of payment processors.
They have zero room to push back against visa/mastercard moralization rules that are enforced by stripe.
It's not their location and size that is the problem, but the fact that the ban request was initially targeting prostitution. Starting the moment it's targeting real persons, you loose the possibility to negotiate. As a company, and commercial broker, you can't say that p*d*shit effectively have to be banned, and in the same times put limits to this ban.