He spent $1 billion on Instagram because that’s where young people were posting photos. After getting rebuffed by Snapchat, he shelled out a whopping $19 billion for WhatsApp to make sure Facebook had a leading messaging platform. And to address Facebook’s weakness in consumer devices, he plopped down $2 billion for Oculus.
Now there’s blockchain, a technology that, by its very nature, poses a threat to Facebook...