The fear part most likely. Depending on what year the quote is from there's a chance that they literally couldn't find a replacement for a programmer. Or want to soak the costs of training one on the job.

Nowadays a lot of developers I know, myself included, work where they do because they like it and it pays somewhat better than the other guys. If I lose my job oh well. I'll throw out my resume, take a week off, and there's a good chance I'll have another job.

It isn't that it won't suck, but it's not going to cripple me or really interrupt my life. The question of "Are they going to fire me?" becomes kind of a joke.