Never bought a politician. Ran a successful business most of my adult life. Of course not at Trumps level of zeros but I am doing good enough for me.
The big businesses worth millions all donate to politicians on both sides of the aisle. They have to, to survive. Of course, this also helps feed crony capitalism.
I doubt those politicians are going to bother with you if you just run a small business. You don't have enough money to feed their greed.
As of a few years ago the Kochs had given 200,000 to Democrats—including Chuckie Schumer. The total is likely higher now. Perhaps they had so much cash sitting around, they ran out of Republicans to give it to?