I am under the impression that the current plastic bags are designed to disolve within a certain amount of time. They have cornstarch in them, I think.
I worked for a corporation that used large volumes of giant plastic bags as thick as water bed mattresses. The local politicians decided that the landfill was being degraded and they decided to fine the companies that were dumping industrial plastic. Our CFO asked how much the fine was compared to what we would spend trying to recycle the stuff. In the end he said, "Pay the fine."
The bottom line is the bottom line. Because so many people in government have no idea how business works, they run head long into making rules that often do no good for anyone.
They do - I’ve tried to pick up bags that have been trapped under leaves and stuff for some time and they shred. PS. the dollar a bag bags I’m required to use for bio yard waste come apart if you put a little too much in them.