If you want to be taken seriously on this, using the phrase "Corporate Dems" is not the way to do it. (see: TYT, who love spouting the phrase just as they took in $20M of venture funding)
The problem the Dems face as a party is that they just had a candidate explicitly denounce white supremacy. And she lost. In part because a whole bunch of rural white people are massively over-represented electorally and who get very angry when they see stories about BLM, Colin Kapaernick, etc. We have a lot of data on Obama->Trump flippers. They voted on white identity politics. This is very bad. Post-LBJ, we're only getting into power w/ DDD setups for brief windows after the GOP fucks up really bad. Nixon. Bush's tax increases+recession. Bush Jr.'s Iraq war and Great Recession.
Figuring out how to win while both avoiding settting off too many of these people while at the same time pushing socially progressive policies is an ugly needle to have to thread. The "Better Deal" stuff that's all economics all the time from congressional leadership is one attempt at doing this.
edit: if you haven't seen this piece yet I'd highly reccomend it:
https://agenda-blog.com/2017/07/03/...beralism-and-the-white-working-class/#more-42