A lot of businesses now have to face that to survive, they need to increase their market share or profit margin by double-digit percentages when they probably don't have double-digit numbers there to begin with :\
And double-digit increases are what they have been working toward the whole time, they know how to do it, that's how they have managed to get by, even though they know it will takes years. These are great business operators, they know they'll make it if they persevere, they just don't know how many years.
And these were the businesses that were shrewdly operating successfully in the USA in difficult markets with slim margins, even if they were leaning to any extent on cheap foreign materials, labor, or even weighted more toward robust domestic commerce in general.
Prevailing in situations that "average" businessmen aren't quite up to.
How do you think the less-skilled operators are going to feel? They know who they are. Lots of times their businesses are totally dependent on the majority of Americans overall being "richer" than most. And in less than 100 days really, that's been brought into question more times than in any other previous decade. With things like over-taxing and currency exchange taking their toll at the same time commerce itself as a source of prosperity is receding, this is going to make them some of them the most nervous of all.
Trump has always been foolish with money, after his first term the US can no longer afford lots of things that were affordable under all previous presidents, you can't make this up.
When a recognized business-bozo-in-chief can remotely do more percentage damage in one day than a business owner can make up for in one year, might as well give up now, or at least take a sabbatical. Trump can't last forever, and anybody who replaces him may not be any wiser or less misguided, but at least would be more stable & trustworthy.