I don't ignore it. But they aren't the only ones.
I don't know that I'd go so far as to say them, or anyone, "buy democracy."
Do you have any evidence of them purchasing votes? Buying off election officials to rig the vote counts?
No?
They spend money to influence the populace, and to influence the elected officials. They make up a tiny fraction of the cumulative amount of dollars spent doing the same. The left has it's own Koch like people.
What about George Soros? That fucker isn't even an American. At least the Koch guys are Americans.
The federal government has become so large that it can and does radically influence big business, so big business influences them. If we had a smaller government, with less power, the need to influence it would decrease proportionally.
You act as if we had this perfect, unbiased, for the people, great government, and then in came the Koch guys and totally ripped it off.
Your hatred of them is irrational.