the issue is not what some cute, affluent, liberal Scandinavian nation with 5 million people does. But rather what the three billion plus people in Asia do, and they seem determined to catch up with the West, whatever that takes, and whatever the cost to the environment and the planet.
Well 'emerging' economies, once they become thoroughly convinced of the need for something, are often much better at solving the problem than we are in the tired and hand wringing West. At least one African nation had banned singled use plastic bags while our politicians were still acting like headless chickens over the issue.
There is a solution to just about anything if you have the will to do it and the guts to do it.