I imagine you're going to get a very different type of person moderating if they have a monetary incentive to do so. I don't disagree with your argument in the broad sense—the rich get richer at the expense of everyone else, and they shouldn't—but adding money to a relationship that doesn't have it always fundamentally changes the relationship, and the incentive structure, and it doesn't guarantee better outcomes.
I have an application to the LinkedIn group of ex-Oracle employees. It was ignored for months and months.
Finally, I wrote to one of the admins. He apologized and said he had a lot of groups he was admin for, and asked, now which group was I talking about, again?
I moderate communities on telegram, I already have people who treat me and my mod team like we are being paid, and this is our full-time job, and we should be more responsive to their concerns. I wouldnt want to be actually paid and have an expectation of quality of service.
