We should absolutely pressure industry to minimise the packaging types and forms in a way that minimises hassle down the chain. Think about toys that come in some combination of plastic cover and cardboard box, both uniquely shaped to that particular toy or brand, and requiring the consumer to shred their fingers trying to separate materials for recycling. Make something like that non-viable in some way so industry is pushed to a more reasonable option.
Someone like Walmart could also, in theory, apply sufficient pressure to make a difference here.
If you're actually intending to bring pressure to bear on US industry then the online clothing industry via Amazon et al is a massive relatively new waste generating sector.
That domain has normalised ordering three, returning two .. and then discarding the return rather than dealing with possible contamination on resale of returned items.
Garment waste figures are staggering (been a year+ since I last looked but I still recall my stonishment at the scale).
Someone like Walmart could also, in theory, apply sufficient pressure to make a difference here.