Tech was already shoveling tons of money into her campaign. Bezos-owned Washington Post was about as Anti-Trump as a news organization can be.
(Personally, I think the article is overstating the case.)
But now its week one, the policies are eggregious and the implementation is incompetent, and a groundswell is building. I suppose now industry leaders dont feel like they are sticking their necks out, or at least they have a lot of company.
Rhetorically, the answer implied is that, had they made their voices and opinions known earlier, it might not have seemed as heroic as it does now. Letting circumstances become dire, when they could have been prevented altogether suggests performances are crafted and dishonest for the purpose of branding, marketing or personal fame.
Sort of like if John McAfee reared his head right about now, but with greater subtlety.
There was really no good choice and it became a choice of the least bad and the guy who won at least isn't afraid to say he's looking out for Americans whereas Hillary was more timid about looking out for the average Joe and Sue.