That's the problem with the system. It comprises of PEOPLE, which is why everything that people arguing for capitalism say about capitalism regulating itself, is bullshit. Not only do masses of people not care about intangible effects of their consumption, capitalism makes it profitable to advertise to people to make them consume more, and a lack of carbon tax makes it more profitable for companies to pollute a lot of the time. The will of the people (aka car company propaganda) is the reason Americans pollute so much. It was advertised to them that driving is the only true freedom, in the 1950s. And now 70 years later there are nearly no walkable cities left, because Americans demanded wider roads.

It doesn’t bother them either if the goods they’re buying were made by starving children. But hey, blame the system.

The system is what makes it profitable to abuse straving children. Also, thanks to the system, it is ridiculously hard to save up for things like, idk, housing, because it's all being bought up as a speculative asset. So if your average person buys a 5$ t-shirt made in Bangladesh instead of a 50$ sustainably sourced one because they can't afford the latter on their budget, can you really blame them, or has the system failed them?

Milk is way cheaper than oat drink and if I go to a gas station, they charge me more for the burger to have a meat substitute, which doesn't feel much like meat.

Most people will never get past the "okay, this might be bad, but everyone else does it too, and if I don't, I'll be at a financial disadvantage" mentality about buying cheaper products, because capitalism is a competition for resources, and we can't afford to give up the advantage of buying cheaper foods, cheaper (ICE) cars (where public transit isn't an option), etc.

Bottom line is, you can get your friends and family to forsake themselves for an intangible goal, maybe you can convince some strangers, but there's no way to get 8+ billion to stop doing what's convenient for them with just propaganda. You need regulations. And that's why any system that depends on the will of the people to achieve intangible goals DOES NOT WORK. It's super easy to get the majority of 8 billion people to start consuming more with just advertising and propaganda. It's impossible to get them all consuming less. I said it before too. Oil companies realize this and that's why they invented the carbon footprint, to keep the people who do care fighting those who don't - that way nobody has energy left to lobby for real, regulationary change.

So sure, maybe capitalism isn't at fault. Maybe the fact that humans exist is. But the goal should be to design a system fit for humans, not to kill all humans or whatever it is that is required to fix capitalism.