Or we could stop putting the onus on consumers and demand manufacturers/producers actually do the right thing. Even Keurig said they’re still making the plastic pods. The actual answer is regulation.
We need to stop excusing the “it’s too expensive to be green” bullshit. If it’s too expensive not to poison the planet then it’s not economically feasible.
It’s like saying “it’s too expensive to not put poison in our food”, then you shouldn’t be making food.