It's been that way for years. I suppose it comes down to Apple's priorities, though I know they've intended to change that in the past year.
Still, I can guess what it is supposed to do and this is really neat.
The work of a grad student who is unbelievably currently looking for work in the SF/Bay Area:
I'd insta offer if she had C# experience, but I'm sure she'd love to hear from SF companies matching her interests and existing skill sets.
But I found myself wanting to multi-touch the screen, to hold one edge while moving another. I felt as though the mouse/touchpad interactions we have available are far less expressive than holding and manipulating the paper with our bare hands.
It's also inspired some pretty deep mathematical theory in computational geometry, topology etc.
He did recommend some online resources for us to use though.
There's this youtube channel:
And this book:
I also have this book:
But find it to be very difficult. Not for beginners by any means.
That should help get you started.
Last time I made some origami was actually for a card for my Japanese neighbour, for this I used paper with a design on and made regular cranes. This project could be monetizable if you could buy paper designs and see how said paper would work in the finished model. Plus what happens if you rotate the design or flip it over? This would be nice to preview so less prototypes have to be physically folded.
Although my origami efforts were received gratefully, I did wonder afterwards whether this was some type of cultural appropriation going on, would I give a French person homemade smelly cheese?
I find immense pleasure in looking at 3d-structures like this. Sometimes I just close my eyes and try to visualize these, the task seems to be so complex for my brain that it really shuts off every other thought I have.
Here's an instructible on it: http://www.instructables.com/id/Design-Papercrafts-with-CAD-...
Edit: Software for doing what you want here: http://www.tamasoft.co.jp/pepakura-en/