Capitalism happens inside a framework of laws. There are strong laws against murdering your competitors, that's why this doesn't happen (nowadays). There is a whole set of unethical behaviors, however, that are commonly used for the goal of producing a profit.
The laws are not generally part of capitalism, but imposed upon it to prevent various harmful activities. Pollution is an example: capitalism itself (the private ownership of the means of production) has no mechanism that could deal with it.
Pollution is nothing more than a negative externality.
People have measurably shorter lifespans due to coal emissions. We aren’t doing anything about that, so why do you think property will be treated any differently?
What's your argument? You've so far told mecapitalism leads to terrible things happening in the name of growth unless there are laws against it, which there are, as 'capitalism exists inside a framework of laws'. Your own argument informs us that capitalism does not automatically mean environmental damage will occur.
