I’m not advocating for people not doing things within their power and influence (i.e. influence their friends and family), but I think it’s clear that systematic collective change is more effective than expecting billions of people to change their individual choices.
Advertising works, and Coca Cola Company has effectively endless resources for advertisement.
We have to push to influence legislation that will force companies to comply. Otherwise we’re just complaining endlessly about people not doing the right thing while these companies freely profit at the expense of the environment.
I go one further and also use public/private key pairs that my acquaintances must use to decrypt the scrambled letters I mail them.