and what happens when we let the "poor" make laws? Endless welfare, unaffordable backroom union deals, massive corruption, massive taxation to move money from the uppers to the lowers, etc. Just visit Chicago or Greece to see what happens when the power shifts to the unions instead of companies.
Also, 'rich' is often a placeholder for companies. Companies want to be successful. That means compromise in a million different ways as bold moves can lead to bankruptcy, boycotts, competitors coming in and taking your market share, etc. Companies have an incentive to play ball as they want to survive and be competitive. Government, on the other hand, survives by default and doesn't have to be efficient at all.
The reality is that good government works when we have all players mobilized and part of the process. Its incredibly cynical to just claim the rich make laws to benefit themselves, especially considering that the US runs on a popular democracy model to the point of directly electing the highest office, which is unheard of in parliamentary democracies. The rich are vastly outnumbered. Perhaps you should consider that a lot of regular people vote in policies that are pro-business because they want jobs and wealth in their area. Not everyone can become a silicon valley hotshot or NYC finance banker. Those 'red state' policies you hate so much bring in employers, jobs, create wealth, etc. We tried communism. Turns out it didnt work. In fact it led to the deaths of 50-100m people and created autocracies, war, political persecution, poverty, and misery on a level unimaginable before.
My friends here in Chicago are all looking for new jobs because a couple employers have already left and many are planning on leaving as the tax level and anti-business attitudes here are killing the economy. This is a city of 3m people with a $550b GDP and we have a junk credit rating and no one knows how to pay off these fatcat union pensions. So yeah, be careful what you wish for. When the average guy has political power, he just writes checks for his friends at the cost of the taxpayer and the local economy. Without the business owning class calling some of the shots, there's really no incentive to do anything right as you can just keep dipping into the public treasury and when that runs out just keep raising taxes per the Chicago model. Which inevitably culminates into a Detriot-like bankruptcy.