Poaching is the modern developers equivalent of "climbing the ladder" or getting a promotion. There is a limited ceiling for someone who is dedicated to their craft. They can go into management and "lose half their brain". They can go out on their own, but being a founder isn't for everyone.

There is no real loyalty. Companies will lay off their employees when money is a concern. Employees will leave their companies when they can make more money elsewhere. This is business. It's not personal, right?