Cost Of Capital? What's That?

I realized it in my gut implicitly when I said (here):

"Why would anybody buy a bond of an American industrial company now after this long running tragic farce, which was capped off today with the President of the United States demonizing the people who lend their money as the capital that enables our companies to produce?", 

but I can't believe I failed to sum it up in this clarifying way..."Obama just raised the cost of capital for any unionized company generally, and UAW company specifically.  We he thinks that was a good thing is a mystery."