They have a looooooong way to go to make it an appropriate tool for large teams, but they are taking all the right steps to reach that hopeful future.
The founders creating a commercial arm of the engine is critical. As a real studio, you need to be able to support consoles and you need to be able to pay someone money to fix broken shit in the engine when you have a scary deadline looming.
I'm sure it's great for a lot of things. I've just been using Unity for a super long time and it still has a lot more "batteries included" features. But I'm jealous AF about realtime global illumination.