We often have no choice, but to buy these products because that’s all that’s available.
This is the point that I’m arguing, which seems to be the foundation of your defeatist stance.
Companies have money because we give them money. Companies are allowed to pollute because we don’t really care that they do. Otherwise, we’d be voting differently, protesting differently, and so on.
I’m suggesting that it’s not often that we have no choice. Most of us have plenty of choices with each product we buy. But we’ll often buy the disposable one made in China because it’s 20% cheaper than one made more sustainably, for instance.