They believe they help people by helping corporations, and, within certain parameters [such as employing people and giving access to health services], this is true.
It's just there are other things beyond the parameters that corporations don't do [eg helping people that aren't employees and can't afford healthcare].
It's always the same story. Let the market decide. But the market would happily let people that aren't customers die. Many people think that leaves space for government action. Republicans, because they are lazy thinkers, assume people who don't have a job don't have one because they are workshy. But there are plenty of people in the unemployed population who are there for completely different reasons.