Has game investing turned into a gold mine or risky bubble speculation?

Disclosure: The organizers of the Videogame Economics Forum paid my way to France, where I participated in a couple of sessions on the game business. Our coverage remains objective. 

Game investments and acquisitions have exploded in the past few years, with billions of dollars at stake. The deals, IPOs, and investments that grab the headlines include the $2 billion Facebook acquisition of Oculus VR, the $1.53 billion SoftBank investment in Supercell, and the $7 billion IPO of King Digital Entertainment. Those deals reflect the potential of games to grow into a $100 billion business worldwide across all platforms by 2017, according to a forecast by game investment bank Digi-Capital.