In the big, big grocery store I use, there isn't much choice about plastic. Over (I estimate) 80% of the products (outside of fresh fruits & veggies) either are containerized in plastic, or is boxed or canned food which is wrapped-in plastic (e.g. cereal) and covered with or wrapped-in plastic. We need to see a big turnaround in this situation.
I don't see much recognition - from manufacturers or consumers - of how many tens of tons of tossed-away plastic are carried out of most of these stores every day. Consumers have few alternatives ... no sign that food packagers give a damn ... or that stores (most are corporate-owned) are struggling to make wiser choices.
It's a lot bigger problem than what container we use to carry our purchase to the car.