synfresh: I actually agree with you that the 25% split to the mod author is low (I won't say unfair because before 25% it was 0). Here is the viewpoint of another mod author and how they look at the 25% split.
Actually 25% is worse than 0. A content creator shouldn't get less than 75% in my opinion (
if the content is to be sold)
As for how 25% is worse than 0, is simple, you feel used and part of a shilling machine that's only purpose is to line other people's pockets, and the more successful you are, they are 3x more successful simply because the math is in their favor.
I can just see selling apples at a stall, and convincing someone to buy a pound of apples for a dollar. But i don't make the transaction, two other people are there, and they take the dollar, and pass back 75 cents to the second guy, who takes fifty cents, who passes me back a quarter... for convincing someone else to buy apples for $1... You feel used and it's unclean and shitty. If you saw this face to face happening for real, you'd get mad and might quit outright unless you were literally starving. They literally were YOUR APPLES and you only get a small fraction in compensation for no good reason.
At 0 return, you feel you contributed to the community. Never once when i modded or made tools did i ever consider getting a penny back in return. Sure i considered getting funding, but it always seemed dirty, plus once you get a little, you think you want a lot more, and then you poison yourself and your products in order to maximize profits. It's sorta like the dilemma for making software and selling them or putting them free, when it's free there's so many burdens that aren't there.