An employer must create more wealth than they use up.
This is called "profit."
It's certainly possible to put an industry on infinite subsidy--AMTRAK comes to mind--but the jobs in such an industry are, for all intents and purposes, a form of welfare. There is an upper limit to how many jobs in America can fall into this category. Subsidy money has to come from somewhere.
It's a worthy goal to save jobs, but if they're artificially supported, it's not going to help in the long run.
Michael Moore is not a reliable source of information.