Here's a short and rough translation of a german column with Nicolas Lietzau, creative director of the upcoming Skyrim total conversion mod Enderal (same guys behind Nehrim for Oblivion):
german source Quick facts: Enderal is a total-conversion mod, completely new landscape with deserts, jungle, forests, a roughly 100 hour campaign. Nicolas states that he's working since the beginning of the project in 2011 about 8 hours daily on it, so over 20k working hours. For free.
In that context it's clear, why this new pay-system from Valve is a revolution for us. So far the only way to live from our work would have been starting a real studio with all the financial risks.
He talked with his team and they quickly came to the solution, that Enderal remains free.
Reason 1: money isn't equal with profit Even if they would sell it, it's unreasonable to really earn money with it - quite the opposite.
Assuming they would charge 30 bucks for it, that leaves 7,5 for them. However, even just 1 cent earned creates an avalanche since it's no longer non-commercial and would have immense repercussions.
- they would have to pay service contractors (voice-over artists, sound studio, external artists). With their current german and english voicework, that means a six-digit figure.
- Software licenses for programs that are free for non-commercial use. A five-digit figure.
- compensations for the few modding ressources coming from other modders, even if it's just a shield or a flower.
- on top of that, the split in their own team, currently consisting of 15 people.
Reason 2: the non-existant fine print Are you obliged to support a paid mod?
How are they responsible for possible system failures through bugs and can they get sued?
Bethesdas take on it is: "Mod at your own risk." Understandable at the amount of mods one had to control, but a huge minefield for every amateur modder.
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Personal note: as understandable it is for me that modders would love to get a bit compensation for their work, this system doesn't do the job. And as long as guys behind projects like SKSE, Enderal or Falskaar see it the same way, I'll stay with the storm in a teacup. ;)