To become elected, a politician needs to have many votes. And to get that, they need funding for their election. For all politicians, the first incentive is this: a powerful campaign that can demolish any opponent. With the right connections to media and publications, any politician can become elected. And this is not a question about connections, so much as it is a question about buying those connections.
When a politician becomes elected, they do not see it as a victory of the people choosing them. They see it as a victory of the wealthy supporting their campaign. When this politician votes for a bill to become a law, they are not thinking about the people; they are thinking about who put them in office, their wealthy donors.
Business elites and corporations donate millions to political campaigns. What do they expect in return? They expect laws to be passed that benefit them. They expect laws that reduce fines for violating environmental regulations. They expect laws that reduce fines for labor violations, for stock trading violations, for hiring violations, for import and export violations. What they support is activity that benefits the company, but hurts our society. This is the interest that props up our politicians and legislators.
Laws that protect the environment will always be opposed by these Capitalists. That is because it is cheaper to produce without the regulations that prevent ecological devastation on Earth. Laws that protect consumers from dangerous foods and drugs, or from unhealthy products, will be opposed by the Capitalists, as well. These regulations slow their profits.
Labor laws that protect unionizing and worker organization will be opposed, too. After attacking society at every part, the Capitalists finally support war. The wealthy will find new markets for their investment companies and new weapons contracts for their manufacturing plants. Environmental decay, worker exploitation, war -- these are the undeniable aspects of Capitalist rule.
We live in a world where capitalists prop up a politician for their own gain. It is no different than a world where aristocrats prop up a king for their interests. Their efforts are to make the government look legitimate and useful for the people. But this is just to deceive us, and to make us that the state really considers our interests. In reality, the government only considers the interests of those who give it power.