Take Instacart: I pay $100/year for unlimited grocery delivery? Which I'm doing once per week, so that's < $2 per delivery. To deliver this service takes the Instacart shopper/driver at least 30 minutes, probably closer to 60. Assuming a $15/hour wage to the driver, that's $13 of loss per order. Which, again, I'm doing 50+ times per year.
And, at the store I order from, prices are exactly the same as in-store so there's not much (if any?) profit they could be extracting on that side.
Let's all just enjoy the VC money subsidizing our lives for this (second) brief moment. Just like Kozmo.com back in the day.