3D performance on mobile platforms?

I have a tycoon-type game in mind that will be released for mobile, and I was wondering if 3D is manageable by the platform. Most of the objects will be static, basic character models will mostly be the only things moving (max 100 characters in a scene), almost non-existent physics, simple textures, etc. With everything that can be optimized optimized, can mobile platforms handle a 3D game that doesnt look like a 1990s try on 3D and more like a modern 3D game?

This is a silly question - if modern mobiles couldn’t handle 3D, why do you think Unity, a 3D game engine, would be targetting them?
Here’s some footage from Shadowgun, a mobile 3D game made with Unity that was released in 2011, some four years ago… YouTube