[citation][nom]jamesedgeuk2000[/nom]Its called outsourcing not blackmail[/citation]
It's called reality.
Of course, if a company needs equipment to keep people working, and the government prevents the import of that equipment, those people aren't going to be able to continue working. They'll have no use for people sitting around doing nothing, so they'd have to lay off those workers and move the work elsewhere.
Simply put, if the government prevents jobs from being continued, those jobs will be stopped.
This isn't blackmail.