Earlier quoted context omitted.
Don't play coy. We are obviously talking about the overall national political landscape, extrapolating from this one development to its part in a larger trend. The specific politics of Delaware (which team is the incumbent and how the state is openly corporate friendly) don't change that.
My point is that the example you’ve chosen to highlight is a major counter example that undermines your broader narrative.
This development is also not a counter example - Both parties routinely do the bidding of corporate entrenched interests, but they market it in different ways. So an instance of Democrats advancing the corporatist agenda isn't some gotcha like you're making it out to be.
Though perhaps by "undermine" you just mean it's something for other partisans to latch onto to support their own rationalizations rather than coming to terms with that "broader narrative".