Typical scenario goes like -- Your company is small or a startup. Suddenly bigger companies invite your staff for bigger pay better benefits better everything. Imagine working for a company that's small or new then Facebook or Google invite you to work for them. Free house, car, 10x salary. As an employee who has kids, bills to pay, wants to have a better life, etc its a no brainer. Your company becomes a revolving door, where interns come in just to get experience that's how competition for talent is.