I don't think Instacart is, or ever wanted to be an infrastructure. At least not as a transportation infrastructure. There is an argument to be made that it is becoming an infrastructure "within" a supermarket, mainly because of their pick & pack infrastructure (this is probably what Aaron is referring to) and understanding of inventory. Compare that to what we're doing at Postmates. We're in the process of creating a transportation layer by combining tens of thousands of people with cars and bikes or on foot into a "programmable layer" that can be accessed through our API and utilized by third parties. Both have huge potential.