I'm pretty sure DC isn't from Europe, considering he says repeatedly that he's on EST. And I don't see how you got 200k a month in earnings. At best, the majority of his supporters are probably the lowest tier, so he's probably making under 40k a month on average, and I think I'm being generous.
Patreon takes their small cut, taxes paid out to the government and then he has to pay his coder, his writer, his posing team, then pay his animator or animators, plus the occasional hire when he has someone do colors after doing the linework.
My estimation of his annual income after everything is said and done is about 150-180k. It's still quite a lot, but not the numbers some people are guessing.
With all that being said, it's still moving really slowly, development wise, and I don't think anyone here would disagree.