Having been at the table for a few M&A deals, I will like to add couple of reasons among many others First is the patience shown by the WhatsApp leadership in finding the right strategic buyers as they rapidly scaled by the numbers of users - and second excellent negotiation skills by the WhatsApp management team - most folks would have been ecstatic to sell a company for 1.6 B - but it is apparent that WhatsApp team knew they get much higher valuations if they found the right strategic buyer. I am sure it was not an easy decision and but turned out to be a great call !