You keep focusing on capitalism, but I'm working a little more generally than that. Any system that has markets would have the same issue, even anarchist ones. There has to be some feedback mechanism to reduce negative externalities on the commons. A centrally planned economy would struggle with it, as well as a fully distributed one.
We shouldn't let perfect be the enemy of good. We can do a lot of good with well thought-through taxes and regulations, and while it may not be ideal, it gets us toward a better world, a more sustainable world. We live in a highly dynamic system, and perfection is likely impossible and must take into account human irrationality.
Yeah, it's a problem. Our society is only sustainable to the extent to which we capture externalities through regulation and taxes, and efforts to undermine that entire concept is infuriating.
I agree that capitalism (as distinguished from straight markets) is the problem, yeah. Especially the part where the accumulation of capital influences the future accumulation of capital via the political process and externalizes cost to the commons.
Markets only work to the extent that they capture all costs in some form. If something is cheaper than the actual cost to society, you end up with problems.
So if (for an impractical example) oil producers had to pay to capture and sequester all the CO2 and methane implied by their oil and gas extraction, as well as repair all the direct damage their wells do, etc, the market might sort itself out. The "true" cost of oil might be $1000/barrel, and society would adjust accordingly. Of course, the time between point A and point B would involve a lot of misery with our current society.
Under capitalism, it would be difficult, but well regulated markets should be able to manage limited resources. The problem is that the negative externalities of meat are not being adequately captured, and meat producers are abusing the general Commons without recompense. That needs to be fixed with taxes or regulations. Then the market can balance around the true cost of providing meat, which would be much higher.
Neither do I, but I am vindictive and someone in Paris was rude to me once!