I don’t know if the President has the authority to order the owners of a private company to leave another nation.At the same time I think it would be in the interest of those companies to pay attention to what the President is saying.
A decision made by a President could have economic repercussions that could cause serious damage to a companies bottom line if they choose to ignore his recommendation.
I'm glad you called them private companies and not American companies, because there isn't anything American that I can see about them.
Honestly, I’m trying to figure out how we got to a point where American companies were able to set up shop in a communist dictatorship, and people be OK with it.
People would have been appalled if companies set up operations in the USSR, but we have people on this site that tacitly defend the loss of manufacturing and commerce to China.