There are not good workflows for doing this for a whole scene, especially where accuracy needs to be preserved. One shot models seem to be very good at providing 3D from a single angle, but multishot is very shoddy at this point, and without seeing behind things you have no clue about what is actually there.

Also, try meshy and look at how many polygons or triangles you get from any of the model objects. Hundreds of thousands, when you retopologize still goes to the high tens of thousands.