I don't think there's any particular malice to the ups and downs - it's just the nature of work these days. Employers and employees have pretty much laid bare their view that the other is simply a cog in their machine. That being true, folks need to understand, plan for, and not be particularly surprised when these ups and downs happen. That means having a runway for lean times, and knowing your worth, how to communicate it, and being flexible when things go pear-shaped. People do move for jobs all the time, yes, but I hope that part of the planning for that involves asking the question - "what happens if this job evaporates?"