Don’t expect any impact on this Shanghai city regulation. My understanding is that it will target areas like gift boxes that are very popular during festival times; like the moon cake festival.
In my apartment complex we currently separate recyclables from organic waste. However, the reality is that every night, every bag of trash is emptied by someone on the sidewalk and anything of value is removed; plastic, glass, metal, paper, wire, etc. In the morning the sidewalk is clean. I am not aware of anyone willing to do this type of hand sorting in the U.S., but it is a regular occurrence here. So, even with the regulation, most empty boxes I see are stacked and piled on the back of a bike to be recycled or reused somehow. I am attaching a photo I took and fairly common bike load to illustrate my point.