That won't be an issue with a system that is in place at the launch of a game (Fallout 4?).
If only I could have an ounce of your optimism. ;)
I'm not saying their won't be issues or that everyone will accept it immediately, but at the very least we won't have a bunch of mods that were free one day and behind a paywall the next. I think people will generally be more accepting if they don't feel like things are being taken away from them.