It's kinda funny. I never considered seriously the reality of trying to monetize mod creation. I'm pretty sure Nexusmods has done that as well as anyone could. I doubt Nexusmods' owners/employees are driving Maybachs; I don't even know if it is a living, so kudos to Nexusmods.
On the other side of this coin are the mod authors -- my limited experience with whom has, on balance, been less than desirable. I've distributed >$200 to 20 different mod authors and received exactly one (1) thank you in return. Manners are rarely innate and must be taught.
I'm aware that 20 is not a significant sample size, so this must not be interpreted as representative. And with that in mind, I'll continue my customs.