I would disagree that one is more aligned with corporate interests than the other. They both sunk in deep, once you look below the skin, as you put it. It just shows in different ways.
The first in the amount of money that flows from corporate interests in to coffers of both parties.
OK, that's a fair point. To clarify, I think the people in the Republican party have a lot more libertarian people in it than the Republicans actually elected to office. There are only a few libertarian minded elected Republicans. I have to agree with you on the party itself. There is little difference with the Democrats, they support big corporations not free markets.
The second is the whole idea of free trade and competition. While we are familiar with how the left affects free trade through government regulation, have you you looked at the affect the other side has? When conglomerates are allowed to grow so vast there IS no competition any more. Rather than a healthy competitive ecosystem, you have an elephant controlling the space, and a bunch of mice scurrying for crumbs. The elephant controls the trade and stifles or buys up the competition. You only have to look at how the giant media conglomerates have swallowed up all the smaller presses and most of our media (left and right) is in the hands of a few. Or look at the tech giants and Amazon and social media. Who owns it? Where is the strong competition? Why are anti-trust laws not enforced?
This isn't actually accurate. The reason that conglomerates reach the point of little competition is BECAUSE of government, not in spite of it. That's what all those campaign contributions are going to, buying influence. Free markets would mean they can fail, but government doesn't let them do that.
For example the 2008 housing bubble. Government caused the crisis by bullying corporations into making bad loans and then funding them with free government money. Then when the bubble burst, government bailed them out. It was the corporatists in both parties who did that. We who support free markets wouldn't have forced them to make bad loans or bailed them out when they did
Corporate interests have their hands deep in the pockets of both and they manipulate the political landscape to favor their sponsors.
Yes. Remember that when you make arguments like you did about "regulation" as if that's a good thing. Actually, "regulation" is how the government tilts the field in FAVOR of companies, not against them.