Add to this: The moment a person pays for a mod, there is a legal requirement for it to work. Now if a free mod does not work, well, bummer and you move on. But the moment cash changes hands, it becomes a legal contract and a lot of consumer laws go into motion. And it can get very complex ( laws differ from country to country ).Bethesda already tried this. But got heavy flak for it because
A) they wanted to sell the mods and keep about 75% of the money !
B) modders usually copy a lot from each other and nobody has any problems with that. But what happens when a modder uses work by others and now gets payed?
So they had to call it off again
I am more in favor of mod authors actually working as DLC content creators, where mods are actual content published under the company. And not mods skimming money for skins, and other frivolous ****.
That actually gives mod authors a reason because they can earn some real money ( Youtube for mods. Patent pending :smile-new: ) with more quality released products.
The real future in my mind is games that act like building blocks for new games on top of it. Most people do not have the time or patience to learn complete graphical engines but want to introduce new content, stories, etc into a existing engine. If this is properly combined and supported by the gaming company above it, you can generate a lot of revenue.
As we have seen with Skyrim, their is a hunger for people to have new content in popular games.
But just trowing 3 or 4 dollar skin mods online, is just disgusting. Paid mods need to act like DLCs, with real content. And contract in place where other DLC authors can potentially reuse assets ( for a fee ) or require a specific master Mod to be present.