Who is really benefiting from the crowdfunding site for artists?
This could be a use case for people to have payment pages on their own websites to make the process more direct. This would also mean that they could post their update content on their own website and use either feeds and/or email to update their patrons.
I haven’t seen a “Patreon” concept on someone’s website in the wild yet, but I have seen examples like Tantek Çelik’s payment page, that do provide a start to the process. Many CMSs already have many of the other moving parts already built in for things like following/subscribing.