The only way that Hollywood ever skews toward liberal is because part of what we make out of Hollywood involves writers, actors, directors, musicians, set designers, and photographers. In general, people like that are going to be more progressive, more open minded, a little more altruistic.
There's such an aggressively apolitical movement in the US that anything that smells of being political - even the term "political" is so ridiculous, when you think about it. The worst part of governing, the political side, is the grossest part, so that's what they call it. So anything that reeks of that immediately gets tuned out by 70 percent of the population.
It so happens that America, according to all the polls that are out there, is pretty progressive. So you're not going to see messages that support Ayn Randian individualism at the cost of the whole, because most people don't agree with that.
I have certain beliefs about how people should treat employees and how companies should be run, but I was really surprised though this process to learn that those beliefs are actually good business.