Where in the US Constitution does it say presidents cannot threaten companies? Obama had his share of threats. I'm sure they could find a suitable legal issue with Twitter targeting Trump while ignoring members of Congress.
Cite two.
https://www.theguardian.com/world/2014/aug/07/obama-tax-inve...
https://www.reuters.com/article/us-obama-financials/obama-th...
Not sure this will support the original commenters point, as these "threats" have a basis in reality and appear to be good causes unlike Trump's, but these are "threats" by Obama at least according to the journalists involved.
Edit: why the downvotes? I am showing that the Trump supporter above is full of shit, Obama's "threats" were for good causes
I never even insinuated Obama's threats were not for good causes. Part of being a president is to execute laws and regulations which includes threats of action.
Since I have no doubt someone will take my "President" comment above out of context, I will not refer to a political figure by their former position title. To me, wishing/expecting to be referred by their former position is akin to using it as a title of nobility and expecting to be treated as nobility.