Since Bethesda have repeatedly and explicitly said there will be no paid mods for Fallout 4, this whole discussion seems rather moot, no?
I mean, they didn't say "No paid mods for Fallout 4 on PC" or "No paid mods for Fallout 4 for the foreseeable future".
And, frankly, having had the last round blow up so spectacularly in their faces, are they really so staggeringly stupid as to try and bring it back again and outright (and demonstrably) lie about it? I doubt it.
[edit]
Ok, maybe my memory's playing me false. I was sure there were several interviews around the Fallout 4 announcement where there were explicit 'no paid mods for Fallout 4' statements from Bethesda, but damned if I can find them. Just lots of 'no plans for paid mods'.
Still, I really don't expect to see this cropping up until their next game at the earliest.