IBM PCjr. Not exactly a regret. It was a family computer when I was a tween. They made the best decision they could based on the information available at the time. But it was not a great product.
As an individual contributor software engineer, I've worked with offshore developers before and always found the experience unproductive. The problem is always management tells me to help them so they can learn. I don't mind being in a mentor role, but I'm not interested in mentoring a temp contract worker.
Google is a global company. They make money from developing countries, they should have employees in those countries as well. Or else the money flows only back to California.
But they don't want employees in Bangalore. They want indentured servants and poverty wages. 25 years ago, I was told there would be no software developers in America, and yet the number has gone up every year.