The best example of a fashion startup I've seen is Indochino (www.indochino.com). They were faced with many of these issues and have gone and taken full control of their end to end supply chain. They are selling "physical fucking product" but they are making it more personalized and custom tailored (pardon the pun), direct to the customer. I don't have much need for wearing a suit these days, but the moment I do, they will be the first and only place I go.
In the beginning they even offered education to their customers around things like 1) selecting the right suit for the occasion 2) various types of ties/ways to tie a tie 3) type of cuffs, etc. They seem to have gotten rid of the education aspect of the business but I found it really helpful as someone who like fashion but doesn't know much about it.