With respect to this list... some of which I agree with... but this isn't remotely a fair metric of "if the Democrats weren't corporatist they would support this". Much of this (but not all) is a hard left wish list. The Democratic Party is a left of center party. It is not a hard left party.
Business is an integral part of American society. We're a capitalist society. That is not going to change. Small businesses make up 99.7% of US employers, create 64 percent of new private sector jobs, provide 49.2% of private sector employment and so forth.
https://www.sba.gov/sites/default/fi..._Sept_2012.pdf
There are 27.9 million small businesses in the US... with 18,5000 firms with 500 employees or more. 52% of them are home-based businesses and only 19.5% of them are "corporations".
Being anti-business makes no sense in a country whose very welfare of it's citizenry is dependent upon a strong business environment. Democrat's being business friendly reflects the reality of the country... this is bottom up not top down. If the nature of the country were different, so would their approach.
That does not make Democrats corporatists. If anything, it makes them pragmatists, trying to gel their social/economic agenda with the strong entrepreneurial culture this country has. Many times they have stood in the way of a corporate agenda. Just look at what's been going on in the FTC since Obama took over. Or even the Affordable Care Act's healthcare provisions. These are very anti-business, tangible policy choices that have had a strong pro-consumer, liberal (somewhat) policy direction.
No one calls themselves a corporatists anymore than anyone calls themselves a fascist. It's only a term used as an accusation. And why Democrats certainly have played ball with business, that is very far from making them corporate lackeys, and it's far from a clear argument that an anti-corporate direction is uniformly the right one. Frankly I grew up with this nonsense, 17 years ago, when you had would be iconoclasts cheering Linux against "Micro$oft". Why? Some anti-corporate crap, nevermind Linux was a mess and 17 years later, Linux is still niche in the consumer market (and crashed and burned on mobile, if you exclude android which is very distantly related at this point). Being reflexively anti-business out of principle when the practical matter is, business has enriched quality of life more often than not, is nonsensical. That's not to say that business should always win, or even should usually win. However your list of things treats it as an evil. If that's what it takes to be considered "not a Corporatist"... seriously, fuck it.
And frankly, on a personal note, as someone who has been an entrepreneur since I was a teenager and I consider it a defining characteristic of me as a person, the Sanderistas anti-business message I find personally revolting. Not just philosophically.
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I hope he knees down and kisses her ring.