And this is the conundrum for vendors.

Making content for V4 means they are competing with every vendor that has ever made content for V4. So it has to either be better than the best of what was made (economic value of the 2nd item), or it has to be something that hasn't been made (And yes, there is A LOT of areas that haven't been covered - I could really, really use male and female clothing from the '20's. Women didn't actually run around in flapper dresses every single day; and in the '50's adult fashion didn't remotely match what teenagers wore - which isn't available either.)

Later figures don't have any where near the extensive wardrobe, so vendors can simply rework earlier content and sell it again (DS based workflow), or the potential customers can convert the clothing they already own (Psr based workflow).