That's probably the biggest reason that drives me today. The Republican Party would naturally become a vehicle for corporatists given it's basic philosophy of limited government and little regulation. That doesn't mean the Democrats are immune to giving in though. As long as you have an election system where politicians must solicit money for their campaigns, then the ones with the most money and the most resources have an advantage every time. A small government with no teeth is something that can't protect the people.
Before this I drifted left because I felt things such as universal health care and public education were and are good ideas. Why do students have to go into debt just to get a better education? Why do we allow 45,000,000 people to live without health care in the nation that claims to be the richest in the world? I think social programs are good ideas, but apparently socialism is pure evil and that I'm a pinko commie bastard for espousing it.
The next level of knowledge I picked up had to deal with the core of fascism. I firmly believe, after reading up and researching it on my own time, that the root of fascism is nothing but the mere lust for power and profits. It's vehicle is the corporation; it's the most effective one nowadays. All that stuff with extreme nationalism, obsession with traditions, anti-liberalism, etc. is one gigantic red herring in my book.
All of this is simply meant to distract the population, while the ones who want power work to destroy the institutions of democracy. Corporations come into the picture because without the resources and support that they command, none of it would be possible. They are the ones that can bankroll politicians, control the media, and move the economy. It was Hitler collaborating with industrialists of the era who put the Germans back to work, but they were turning out war machines, not things used in peace.
While it's one thing to stoke people's nationalism, it's another to get them to do things against their own interests like start wars and give up their freedoms. Someone else already covered how to do this:
The reason why my stance is this way is not only because I think helping people get a leg up is a good idea but because I fear the emergence of corporatism as the dominating feature in the US.