It is completely possible to orient purchases away from plastic. In fact if someone believes that plastic is bad then they should have some stake in it by making those decisions themselves.
I went through reducing my plastic use myself, it was not difficult to reduce my plastic use by 50% or more:
A: look at my trash before I move it to the curb to see what plastic things were in there
B: find substitute for the obvious things, like using water bottles, buying vegetables using reusable bags instead of buying them in packages, switching to a non-plastic dental floss, etc
... and that is all. Companies respond to consumer demand. You can play a part in it by orienting your demand to non plastic items.