For your first part, immigrants displacing jobs is a news story pretty much anytime it's not western European. These stories are common place with Hispanics, eastern Euros, Middle Easterners, Africans, etc. The difference here is the perverse corporate (read: institutionalized) incentives to benefit from displacing those jobs.

Your second parts about the reality of employment in the US is dead on. There are some companies (or at least some organizations) that benefit from grooming employees and keeping them engaged, but most pretenses of commitment are embarrassing lies. Reid Hoffman's spiel about "tours of duty" strikes me as the most suitable framework for the current corporate job market.