Sorry pal, but now you're moving the goalpost. You declared that capitalism is selling at the highest cost the market will bear. These politicians are being capitalists by selling their product, legislation to the highest bidder. Their supposed to sell it to the voters (who appointed them at the ballot box and pay their salaries with taxes) but the voters offer less than the market will bear.
That's capitalism - like it or not.
That's poor oversight by the voters. Because most of them are re-electing the douchebags who made promises to the voters before the elections and then sold out to corporate interests. I'd expect a lot more people voting for third parties, concerns about "lost votes" be damned.