Re: trust and commitment
I don't thnk many workers completely 'trust' their employers anymore. Complete, absolute trust? Definitely not.
I do trust some of the people I work with, but I certainly do not trust everyone. Is that a problem? Yes, and no.
I don't think this is different in other industries. I'm pretty sure it is healthy to have some scepticism about your employer and what your employer says and does. Unless you drank the koolaid, it's hard to not read between the lines.
There are also many other reasons why a candidate does, or does not, take a job. Perhaps the candidate received a strong counteroffer from their current employer (an offer too good to refuse, perhaps?). Perhaps, something changed in their personal life. Also, as SusanV828 says, employers back out of hiring decisions just as often.