Earlier quoted context omitted.
"I wish these companies well in retaining their hires." I suspect that they aren't very good at that, and are counting on the fact that most of the companies that they would like to hire people from aren't very good at it, either. Even if that's not correct, it's still staggeringly asinine.
You're preaching to a choirboy! Some of the unemployed have been laid off because they were the most expensive people on staff when a company needed to cut costs. Sometimes that means that the best people were let go. Other times entire departments get the ax because of a power play, so it's a reflection on the lack of political knife fighting skills of a manager several rungs higher up the ladder.
Or the political machinations of lousy management. Not to mention the typical bait and switch that most tech companies pull on talented staff, as was my experience at amazon (which as far as I can tell is the rule there):
Job description: develop a sophisticated new system to replace the barely-functional bug-ridden nightmare we're stuck with now
Actual job duties: wade into the bug-ridden nightmare and add features to the framework that's designed to break as much as possible if you touch anything.