Corporations own the government and make all the rules, therefore we need government to police the corporations!
Environmental regulations have worked out well in the past.
"In 1969, the Chicago River was severely polluted, and fewer than ten species of fish were able to survive in its waters.
...
"Thanks to federal legislation, like the Clean Water Act, and local efforts, such as the Tunnel and Reservoir Plan (TARP), the Chicago River now supports approximately 70 species of fish."
You want more examples?
It's Republicans that want deregulation, favor policies that encourage monopolies, oppose campaign finance reform ...