Earlier quoted context omitted.
There is no other, better, more humane form of capitalism. Capitalism's only concern is the generation and control of capital by the capitalist class. It isn't that capitalists want to destroy the environment, it's that they don't care about the environment beyond it being a resource to be exploited and consumed. "Better capitalism" just means doing more of that exploitation faster and more efficiently. I don't know…
> I don't know what you love and call capitalism Private property and competitive free markets. I just don't like where they end up. I think they need a firm hand to keep from turning into a paperclip maximizer. Maybe that's impossible, but we can't know until we really try. It's not like other systems have a better track record on environmental protection. https://en.wikipedia.org/wiki/Aral_Sea
Socialism is the firm hand keeping capitalism at bay. Environmental laws, labor laws and the abolition of child labor, the 8 hour workday, weekends, minimum wage and overtime, disability rights and social welfare (such as it exists in the US) are all due to socialist activism in spite of the free market. The Black Panthers are the reason American schools have free lunches.