Some things change, and other things never change.
The youngsters of today are learning that loyalty to one company or employer is hardly ever worthwhile. The employers these days are going to partimers, no health insurance coverage of their employees, and generally a strong desire to turn employees over to continually get fresh talent, all the while knowing they're going to be letting them go in a matter of months. -I read that very thing on this forum a matter of months ago by an employer that was quite proud of turning over employees. -Though I would seriously doubt that those employees were told this when hired and going to work for them....
I don't blame the young uns for looking out for themselves in today's marketplace. One statistic I heard recently, was that a 20 year old will have 6+ different employers by their 30th birthday!

They've got to adjust!