Toymaker Mattel launches a new game studio with a focus on Roblox and Fortnite that could signal a growing shift in where studios spend money

10 billion hours in Roblox Toy company Mattel is getting into the videogame business with the launch of Mattel Game Studios, which it says "will develop, publish, and operate original interactive experiences inspired by Mattel’s portfolio of iconic brands." But the approach it's taking to that task…