Just making food cheaper is not an "enormous" benefit to society. For evidence of this see the dollar menu at McDonalds[1]. Food delivery has existed for years now in the US and EU. Please provide any evidence that these services have resulted in either cheaper or healthier food consumption.
And I don't know for sure that these new delivery services will result in cheaper and/or healthier foods. I'm guessing (and hoping) that, as per the article, relying on these new delivery "layers" will provide more options, and more options will translate to lower prices.
But either way, that doesn't matter. My disagreement with parent was only whether it's valuable to improve things like food delivery, and I pointed out that the food industry, in general, is incredibly important to most people's lives, so trying to improve it is a huge value to society.
I mean, I didn't think about it much before, but now that I have a child, the days of just throwing together random things from the fridge doesn't cut it, and ordering takeout is too expensive. It's either cook every few days or spend tons of money.
If the market starts giving me cheaper, healthier options than ordering pizza, then I'd consider it a huge quality of life improvement, not to mention a huge time saver.