I think it's a common view, exemplified in this bit by George Carlin:
About half the population doesn't vote.
What I've noticed about a lot of people (and this is more of a personal impression and not something I can actually prove), it's that they seem "programmed" in some essential way - at least when they talk about current events and the common political issues of the day.
I hear the same talking points, arguments, and rhetoric echoing back and forth. I wonder if they formulated these views on their own, based on their own research and critical examination - or if they're just repeating/parroting what they've heard others say. They allow others to set the agenda and to tell them what they should care about and what they should not care about.
The corporations control everything because the people have abdicated their power, either because they're too gullible or too apathetic.
Half of the people have given up completely and don't even bother to vote. The other half who do vote tend to be suckered into the "lesser of two evils" approach to politics.
I doubt there are very many people who truly believe that it really changes much, but they seem to vote for whomever they believe will cause the least damage or harm.