But as lot of things are changing around us - as bookstores shutting down and e-books are taking their place, cabs have been taken over by an app (uber), hotels are threatened by Airbnb, and several other examples - I have seen a shift in work ethics and human behaviors too.
In the beginning I was taken aback, but I guess, I am accepting it as another opinion rather than an unethical value. Particularly, since tech industry has become main stream, staying at workplace for many many years is not seen as a virtue, rather a weakness. If you are staying more than 4/5 years at one company, you are a dinosaur who can't evolve! If you have worked in three companies over 7/8 years, you may be more valuable as you know how to cash your worth as well as your ability to work in changing/different environments. Company may see you as an adaptable and a courageous 'employee' (just another employee! Ha!!). You may be seen as a person who knows how to negotiate.
Don't feel shocked. I did! but I learned: Right or wrong - this is the reality of today's corporate world.