I'm not sure that I would hold up King.com as an example of either engineering or business talent.
On the technical side, I've not seen anything very impressive about their games, and their business practices seemingly consist of ripping off (later settled out of court) an indie developer who built a game in memory of his late mother, and dragging him into a protracted legal battle.
Edit to include sources:
https://en.wikipedia.org/wiki/King_(company)#Trademark_and_c...