because everyone with the slightest bit of knowledge about economics knows that trump would be a disaster. not a difficult question.
and the breitbart article (unsurprisingly) is way off base. pinkwashing is not synonymous with leftism (and is in fact widely derided in leftist circles)
Big business has had a growing affinity for left wing advocacy long before Trump became a candidate.
As for 'Pinkwash' big business has been routinely backing left wing 'social justice' ideology in all kinds of areas, including those areas like immigration where the right wing view is clearly far more popular than the left wing view. I don't think, therefore, it can be put down to a desire for good PR, its much more deep seated than that.
Younger, newer execs are not social conservatives.
Hillary Clinton was an economic moderate and a social liberal.
If we say it over and over again, it'll become true!
Compared to Bernie Sanders, she was very much an economic moderate.
Compared to Donald Trump, she represented continuity of existing economic policies; no sharp expansions or contractions, but a decent amount of predictability.