King of Pain: Pfizer's Move into Abuse Resistant Opioids and the Virtues of Massive Scale

Pfizer’s $3.3 billion acquisition of King eliminates the primary opportunity for investors to play in the abuse-resistant formulation space and renewed questions about the logic of perpetual expansion atop Big Pharma. But the realities of the abuse resistant marketplace suggest it makes a good case for scale and diversity. Is this a sign of things to come in other drug classes?