We've been doing it for 25 years now - shipping IT work overseas, that is. We know the pros and cons. We know what works, and what doesn't work. It's not like any of this is new. I suspect in this respect the SV companies are 25 years behind where the rest of Corporate IT has been.
Oh, and the other thing we've learned in the past 25 years is a cheaper labor rate does not necessarily yield reduced cost. In fact the total cost actually increases in many cases if not managed carefully which means judiciously selecting what kind of work gets shipped overseas. That's all part of the lessons we've learned over the past 25 years.