Yes to both. There was a time when Unity had momentum because it was free* and the documentation was (comparatively) better than Unreal for the average user.

Yes to both. There was a time when Unity had momentum because it was free* and the documentation was (comparatively) better than Unreal for the average user. The learning curve for unity is arguably better for 3D and inarguably better for 2D than Unreal. *The seat cost for unity has been low (albeit changing over time), but you could release and ship a video game without paying for anything