I work in this exact space (online grocery retailer in Europe). We're profitable and one of the few companies to be so in the sector - many online divisions are losing money and being bankrolled by the parent company with physical stores. Alternatively, burning VC money.
The thing that's wrong with Ocado's technology is that it's ridiculously expensive and tailored for huge FC's (fulfillment centers). The problem with that is that it needs to serve a large population base to be effective and that's hard - in dense metros, the driving times are much longer despite smaller distances. In sparse metros, the distances are just too long. In our experience, the optimal FC size is 5-10K orders/day, maybe up to 20K/day in certain cases, but the core technology should certainly scale down profitably to 3-5K. Ocado solves for scaling up, what needs to be solved is actually scaling down.
There are a lot of logistical challenges outside the FC, especially last mile and you need to see the system as a whole, not just optimize one part to the detriment of all others.
The thing that's wrong with Ocado's technology is that it's ridiculously expensive and tailored for huge FC's (fulfillment centers). The problem with that is that it needs to serve a large population base to be effective and that's hard - in dense metros, the driving times are much longer despite smaller distances. In sparse metros, the distances are just too long. In our experience, the optimal FC size is 5-10K orders/day, maybe up to 20K/day in certain cases, but the core technology should certainly scale down profitably to 3-5K. Ocado solves for scaling up, what needs to be solved is actually scaling down.
There are a lot of logistical challenges outside the FC, especially last mile and you need to see the system as a whole, not just optimize one part to the detriment of all others.