Which is fucking stupid, because you lose the good talent and get left with the ones who can't find a place that treats them better. But then again, it's just standard modern day capitalism trying to make the line go up for another quarter, no matter the long term detriment.
We can outsource physical labor, now we can outsource intellectual labor. Fly em in, give them the lowest wage they'll accept, threaten with deportation if they fall out of line. This is the kind of deal these companies are really looking to exploit -- they save money trimming their higher-paid talent while replacing them with someone being paid far less. It's a win-win for the corps
And it's not even guaranteed to work. All corporations seem to be doing (quiet) layoffs so most employees just suck it up and commute, brimming with fresh resentment.
Any quiet firing will tend to selectively get rid of more good workers than bad workers. The stars with good resumes and reputations in the industry can find good work elsewhere, and on the margins shittier work conditions will cause them to leave. The ones who can't get another job are the ones that stay, and aren't going to be as productive.