Avoiding every company that does something unethical is impossible. Imo, avoiding giving money directly to those unethical practices is what we should strive for.

Ie, Nestle is notorious for the way it acquires and sells bottled water, using legal loopholes to leave communities without drinkable water, and adding sodium to their water to keep you thirsty and drink more. So don't buy their water. Assuming enough people do so, the company will, inevitably, stop selling water and focus on products that are selling. Does Nestle as a whole deserve to fuck off? I mean, sure, but, at the very least, we can pressure companies to only engage with the practices that we consider passable.

I avoid Nestle, because fuck their water shit, I don't trust them to source cocoa reasonably either, and they are nowhere near having a monopoly on good chocolate, so they're perhaps a bad example. But we can at least push companies around, because ultimately, the only thing they give a shot about is our money.