Supply Chain Management is a field that is heuristic-driven because there isn't a solution. The heuristics that drive modern food distribution are the result of a real world genetic algorithm that is already thousands of generations deep...and miniscule incremental improvements have been the subject of PhD Theses for over a hundred years now. You don't optimize on top of that by writing a web service. Supply Chain Management may not be technologically advanced in its usage of enterprise software, but that doesn't mean that their ideas and processes are stupid. At best, it means there are some annoying frictions in the industry in the way that they interact with other industries (and there are actually plenty of viable startup opportunities to fix this). The presumption of stupidity[2] regarding the existing state of logistics and supply chain management killed this company, just like how it killed Webvan, and is going to kill a whole host of startups in the distribution and delivery space within the next few years. [3]
[1] https://static.googleusercontent.com/media/www.itasoftware.c...
[2] http://www.aaronkharris.com/presumption-of-stupitidy
[3] PS: If you are in VC and have a stake in any startup that is doing last mile delivery, liquidate now. There isn't a single startup in the space, whether they are currently valued at $1 or $1B, that can sustainably provide their existing value proposition that they are promising to their customers. It is possible to force scale some of them into something sustainable, but your valuations make me believe your cash flow neutrality projections are off by more than an order of magnitude.