I'm not defending Nestle, I am not a fan of their business practices, but that's independent of the point I am making.
I don't relate to this, like, at all? I'd venture to guess most people I know would agree too. I never feel like I was used as a pawn, or that I was manipulated unfairly. Even if I was, it wouldn't bother me in this context. I'd become aware of it, understand what psychology tricks were used for it, see if it is truly bad or not, and if it is then become aware of how to stop it. Simple, easy, done.
Driving out small businesses is an issue, yes I agree. It's something that needs to be dealt with as over time corporations are becoming larger and fewer which hurts consumers. Nevertheless, II think you're taking all of this way way too seriously and focusing on something that isn't as big of an issue as it might seem, and is ultimately a distraction from the actual issue large corporations can present (also I should note, most of them aren't bad. These discussions often make it to sound like all are inheriently bad). Yeah, I agree there are a number of corporations that have shady business practices and unethical motatives, and they should be dealt with accordingly, but that is the thing to focus on. If you're passionate about stopping nestle, then put effort into going against them. I doubt it will have much an effect, but it's better than nothing I suppose.
And you're right, this is how the modern world is, we can't live without consumerism. It's the bloodforce of the world economy, and to remove it would destroy the modern world and send it back to the dark ages. As such, the best thing to is make peace with it, and modify it/manage the best that we can.