Looks so simple, but I guess that's a sign of good design. I was also surprised something like this didn't exist already. But my first thought was that it will almost certainly be cloned and sold en masse pretty quickly, so I hope she gets enough revenue from it to pay for her time.
A fitted wardrobe would be pricey (~$4000), barely fit depthwise and half of the space would just be covering the flue if we wanted it wall to wall.
On the other hand I can just buy 3/4 of these for each wall and still come out ahead. The grooves in the rods are well thought out and mean that I can saw them to size myself, as can anyone.
The only drawback I can think of is having clothes up directly against a wall. This could obstruct airflow and be an incentive for mould to grow.
Might be time for my first ever pledge.