While it is a corporation's responsibility to ensure financial stability of their corporation the loss of jobs from said corporation would be too severe and have a negative impact on the national economy.
Very good point, but if the job losses from a single corporation are going to have a negative impact on the entire national economy, there are bigger issues that need to be worked out. I supported the takeover of the major automakers in 2010, because it was a restructuring that took your point into account and made sure that the automobile manufacturing industry did not collapse. That wasn't a subsidy, really, it was more of an industry rescue package.
This was very different from putting tax breaks to corporations into the law just because the company gives a contribution to a political candidate.