governments exist (in part) to regulate corporations, in order to stop them from doing things that are deleterious or destructive to the public good and to individuals who work for them. They have the means and motive to step in, whether declaring certain kinds of waste dumping to be illegal, trying to prevent private companies from bribing or otherwise influencing public officials
Unfortunately they don't actually do these things in real life
Toxic cynicism isn't super healthy. Research some members of Congress to find the ones who are in it for the good of people. My senators from Oregon seem to really want to help. I'm a huge AOC fan
But I get it. Especially in election years, and especially in US since citizens United we see little prizes that maybe could have come sooner
Anytime FDA protects beef or milk interests, sure.
Some Supreme Court members are in it for the cash.
There's tons of corruption, but the examples above were legitimate.
It's also really hard to tell what your own members would do if they had full control of their chamber