He didn't follow someone's design. He designed what he wanted. That's an extreme reversal of where trends and styles come from.
Anybody can get anything, anytime, anywhere, ... unique and inspirational.
They target the 'good enough' consumer. Cost is harder to control when you're bigger. The challenge comes when you hit 200 to 300 stores--that's when you lose control.
The consumers love it. That idea of disposable fashion is really appealing.