If he keeps this kind of thing up, picking on individual companies like he does with political enemies, one thing that comes to mind is that he's gonna scare the shit out of "Wall St".:

Trump threatens Harley-Davidson with taxes ‘like never before’ and predicts its eventual collapse

By Damian Paletta, June 26 at 8:40 AM

President Trump on Tuesday threatened the iconic motorcycle company Harley-Davidson with severe taxes and predicted a public revolt that he said would eventually put the 115-year-old firm out of business, blasting the Wisconsin company for a plan to move some operations outside the United States as a way to avoid getting caught in the middle of an escalating trade war.

Donald J. Trump✔@realDonaldTrump

A Harley-Davidson should never be built in another country-never! Their employees and customers are already very angry at them. If they move, watch, it will be the beginning of the end - they surrendered, they quit! The Aura will be gone and they will be taxed like never before!

8:17 AM - Jun 26, 2018

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Trump also accused Harley-Davidson, without providing any evidence, of intentionally misleading Americans by saying the firm was moving some operations out of the United States in response to new tariffs imposed by the European Union.

The intensity of these attacks, which he typically reserves for political opponents, came in Twitter posts [.....]