Immigrant pops are seriously the one thing keeping some poor neighborhoods worth living in. In my hometown, we used to have huge food deserts. Then asian grocers started setting up shop with beyond reasonable prices, and even though their American brand slop selection was barebones, all you really needed was a cookbook and some daring and you could figure out how to use the new ingredients. Same has gone for restaurants for much longer than that too.

Then, because fewer people have cars in poor neighborhoods, smaller grocers get by on the foot traffic, and suddenly you have walkable neighborhoods.

In general I feel like people have been downright eager to abandon fast food. Used to be there was no better way to max calories per dollar than fast food, but now you really are just better splitting the giant burrito and keeping the other half for lunch tomorrow. Keeps better in the fridge too than anything that lists grease as the second ingredient too