BaiSiwa I think Patreon has a selective audience. By that I mean it depends on the story, and the author.
However, remember the premium stories would also have contracts. So in addition to royalties they’d get support, and if you happened to be selected, they’d help you in other ways.
Sure, when compared to ‘origin stones’ authors of some stories can make more money without them. However, with the help publishing, the exposure, the alternate avenues of generating revenue - turning stuff into web comics -, and all the other things they are offering. In the end, it would probably tip the scales towards profitable to drop the Patreon.
One day, you might have that choice Bai. Hopefully, you’ll make money either way.
May we all make money!!!!