Why isn't there a super awesome mobile first Node.js shopping cart platform?

The world of innovative ecommerce platform is pretty much standing still. The latest born was pretty much Magento and now they are heavy as heck. It is slow and hard to maintain. The Admin UI is cumbersome. I am not counting the SaaS type like Shopify or Wanalo.

Why isn't there any kick ass node.js shopping cart that is easy to use like Etsy interface? Or should I take the task of building it??