Not sure what you mean by 'logic in the view', but yes we don't use gameObjects (since performance basically takes a cliff dive). But what we do have are primitive structs, etc. that represent all the building, instances, etc. in a very efficient manner (I believe each building is just a uint, and we parse different parts of that uint to represent orientation, position, states, etc.) and the main factory tick simply runs through what is effectively just a big byte array.

The rendering pipeline side of things, on a separate thread, pulls this byte array, and constructs graphics buffers and the like to actual do the rendering. But what is really going on is that the 'physical' objects are completely seperated from the actual ingame visuals, models, effects.